{"id":25591440,"date":"2024-08-24T11:44:03","date_gmt":"2024-08-24T06:14:03","guid":{"rendered":"https:\/\/entri.app\/blog\/?p=25591440"},"modified":"2026-11-09T17:16:15","modified_gmt":"2026-11-09T11:46:15","slug":"deloitte-python-interview-questions","status":"publish","type":"post","link":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/","title":{"rendered":"Deloitte Python Interview Questions 2027: Updated Preparation Guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6af1c84dbd761\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6af1c84dbd761\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#Deloitte_Python_Interview_Questions_Introduction\" >Deloitte Python Interview Questions:\u00a0Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#Why_Join_Deloitte\" >Why Join Deloitte?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#How_to_Prepare_for_a_Deloitte_Python_Interview\" >How to Prepare for a Deloitte Python Interview<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#Top_Deloitte_Python_Interview_Questions_and_Answers\" >Top Deloitte Python Interview Questions and Answers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#Deloitte_Python_Interview_Questions_Conclusion\" >Deloitte Python Interview Questions: Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<p>This guide offers questions, answers, and tips for your Deloitte Python interview. It includes preparation advice and common Deloitte Python Interview Questions. Follow the tips given to increase your chances of success. You&#8217;ll be well-prepared for your technical interview with Deloitte after reading this. Let us start with the introduction to Deloitte.<\/p>\n<p><em>Check out this video by Entri in Malayalam!<\/em><\/p>\n<div class=\"epyt-video-wrapper\"><iframe loading=\"lazy\"  style=\"display: block; margin: 0px auto;\"  id=\"_ytid_59197\"  width=\"480\" height=\"270\"  data-origwidth=\"480\" data-origheight=\"270\"  data-relstop=\"1\" src=\"https:\/\/www.youtube.com\/embed\/6cG0hheJHHk?enablejsapi=1&autoplay=0&cc_load_policy=0&cc_lang_pref=&iv_load_policy=1&loop=0&rel=0&fs=0&playsinline=1&autohide=2&theme=dark&color=red&controls=1&disablekb=0&\" class=\"__youtube_prefs__  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<p style=\"text-align: center;\"><strong><a class=\"in-cell-link\" href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">Get hands-on with our Python course \u2013 sign up for a free demo!<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Deloitte_Python_Interview_Questions_Introduction\"><\/span><strong>Deloitte Python Interview Questions:\u00a0<\/strong><strong>Introduction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Deloitte Python interviews vary significantly by role. A data analyst may be tested on Python fundamentals, Pandas, SQL, and business problem-solving, while a software developer may face coding, OOP, APIs, testing, and system-design questions. Data-engineering candidates should also expect PySpark, ETL concepts, cloud services, and data-pipeline scenarios.<\/p>\n<p>This guide covers the Python questions most likely to appear in a Deloitte interview, along with concise answers, updated explanations, and a practical preparation plan. Use it alongside the specific job description, your resume projects, and hands-on coding practice.<\/p>\n<p>Deloitte interviews commonly assess both technical ability and consulting-ready communication: can you explain your approach clearly, justify trade-offs, work with stakeholders, and connect technical work to business outcomes?<\/p>\n<div class=\"lead-gen-block\"><a href=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.pdf\" data-url=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.pdf\" class=\"lead-pdf-download\" data-id=\"25556851\">\n<p style=\"text-align: center;\"><button class=\"btn btn-default\">download deloitte python interview questions Now!<\/button><\/p>\n<\/a><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Why_Join_Deloitte\"><\/span><strong>Why Join Deloitte?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Deloitte is known for being an excellent place to work, especially if you&#8217;re starting or growing your career in technology. Here are some reasons why joining Deloitte is a great idea:<\/p>\n<h3><strong>1. Career Growth<\/strong><\/h3>\n<ul>\n<li>Deloitte offers clear paths for career advancement.<\/li>\n<li>Employees gain experience across diverse, impactful projects.<\/li>\n<li>Work with major global clients from various industries.<\/li>\n<\/ul>\n<h3><strong>2. Work Environment<\/strong><\/h3>\n<ul>\n<li>The culture is inclusive and supports collaboration.<\/li>\n<li>You\u2019ll work with experts in diverse fields.<\/li>\n<li>Teamwork and knowledge sharing are highly encouraged.<\/li>\n<\/ul>\n<h3><strong>3. Learning Opportunities<\/strong><\/h3>\n<ul>\n<li>Deloitte provides strong training in soft and technical skills.<\/li>\n<li>Employees gain hands-on experience with the latest technologies.<\/li>\n<li>Global teams offer continuous learning opportunities.<\/li>\n<\/ul>\n<h3><strong>4. Employee Benefits<\/strong><\/h3>\n<ul>\n<li>Competitive salaries and performance-based bonuses.<\/li>\n<li>Flexible work options promote a healthy work-life balance.<\/li>\n<li>Comprehensive wellness programs support employee well-being.<\/li>\n<\/ul>\n<h3><strong>5. Global Reach<\/strong><\/h3>\n<ul>\n<li>Deloitte operates in over 150 countries worldwide.<\/li>\n<li>Employees work on diverse, global projects.<\/li>\n<li>The firm values diversity and fresh perspectives.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/entri.app\/course\/python-programming-course\/?utm_source=Blog&amp;utm_medium=sticky_banner&amp;utm_campaign=python_blog\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-25591801 size-full\" src=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course.webp\" alt=\"python_programming_course\" width=\"400\" height=\"400\" srcset=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course.webp 400w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-300x300.webp 300w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-150x150.webp 150w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-24x24.webp 24w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-48x48.webp 48w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-96x96.webp 96w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-75x75.webp 75w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/05\/Python_programming_course-350x350.webp 350w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Prepare_for_a_Deloitte_Python_Interview\"><\/span><strong>How to Prepare for a Deloitte Python Interview<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Prepare in four stages<\/p>\n<ol>\n<li><strong>Understand the role<\/strong>\n<ul>\n<li>Read the job description carefully.<\/li>\n<li>Identify whether the role emphasizes analytics, software development, cloud, data engineering, AI\/ML, or consulting.<\/li>\n<li>Match your preparation to the listed tools: Python, SQL, Pandas, PySpark, Power BI, Tableau, Azure, AWS, GCP, etc.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Build Python fundamentals<\/strong>\n<ul>\n<li>Practice core syntax, data structures, functions, OOP, exceptions, file handling, modules, and virtual environments.<\/li>\n<li>Be able to write clean code, explain time complexity, and debug errors confidently.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Practice applied work<\/strong>\n<ul>\n<li>For analyst roles, practice Pandas, SQL, Excel, data cleaning, visualization, and metric interpretation.<\/li>\n<li>For engineering roles, practice APIs, Git, testing, databases, cloud fundamentals, and deployment concepts.<\/li>\n<li>For data-engineering roles, practice PySpark, ETL design, SQL optimization, and pipeline architecture.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Prepare your story<\/strong>\n<ul>\n<li>Prepare two or three projects using the STAR method: Situation, Task, Action, Result.<\/li>\n<li>Be ready to explain the business problem, your specific contribution, tools used, challenges, and measurable outcome.<\/li>\n<li>Prepare examples of teamwork, handling feedback, meeting deadlines, and solving an ambiguous problem.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<div class=\"lead-gen-block\"><a href=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/03\/Python_PDF.pdf\" data-url=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/03\/Python_PDF.pdf\" class=\"lead-pdf-download\" data-id=\"25556851\">\n<p style=\"text-align: center;\"><button class=\"btn btn-default\">download entri&#8217;s python course curriculum Now!<\/button><\/p>\n<\/a><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Top_Deloitte_Python_Interview_Questions_and_Answers\"><\/span><strong>Top Deloitte Python Interview Questions and Answers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><strong>Basic Python Questions<\/strong><\/h3>\n<h5><strong>1. What is Python?\u00a0<\/strong><\/h5>\n<p>Python is a high-level, dynamically typed, general-purpose programming language known for readable syntax and a large ecosystem. It is popular because it supports rapid development across web development, automation, data analysis, machine learning, scripting, and APIs. Its extensive libraries and active community make it especially useful for prototyping and data-driven work.<\/p>\n<h5><strong>2. What are the key features of Python?\u00a0<\/strong><\/h5>\n<p>Python is dynamically typed, interpreted at a high level, object-oriented, and supports functional programming patterns. It has a large standard library, strong third-party ecosystem, readable syntax, cross-platform support, and extensive libraries for data science, web development, automation, and testing.<\/p>\n<h5><strong>3. What is PEP 8 and why does it matter?<\/strong><\/h5>\n<p>PEP 8 is Python\u2019s style guide. It improves readability and consistency through conventions such as four-space indentation, <code>snake_case<\/code> for functions and variables, <code>CamelCase<\/code> for classes, and meaningful names. Consistent style makes code easier to review, maintain, and collaborate on.<\/p>\n<h5><strong>4. What are Python&#8217;s built-in data types?<\/strong><\/h5>\n<p>Python has several built-in data types like integers, floating-point numbers, strings, lists, tuples, dictionaries, and sets. Each of these is designed for different purposes, like storing numbers, collections of data, or key-value pairs.<\/p>\n<h5><strong>5. What is the difference between a list and a tuple in Python?<\/strong><\/h5>\n<ul>\n<li><strong>List<\/strong>:\n<ul>\n<li>Mutable (can be modified).<\/li>\n<li>Defined using square brackets: [1, 2, 3].<\/li>\n<li>Suitable for dynamic data storage.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tuple<\/strong>:\n<ul>\n<li>Immutable (cannot be modified).<\/li>\n<li>Defined using parentheses: (1, 2, 3).<\/li>\n<li>Suitable for fixed data storage.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>6. What is the difference between Python 2 and Python 3?<\/strong><\/h5>\n<p>Python 2 is an older version that is no longer supported, while Python 3 is the modern version. Python 3 introduced many improvements, including better Unicode handling and changes in syntax like the print()\u00a0function. New projects should always use Python 3.<\/p>\n<h5><strong>7. How is memory managed in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Private Heap<\/strong>: All Python objects are stored in a private heap.<\/li>\n<li><strong>Reference Counting<\/strong>: Python uses reference counts to track objects.<\/li>\n<li><strong>Garbage Collection<\/strong>: Cyclic garbage collector to clean up unused objects.<\/li>\n<li><strong>Dynamic Memory Allocation<\/strong>: Handled by Python\u2019s memory manager.<\/li>\n<\/ul>\n<h5><strong>8. What are functions in Python?<\/strong><\/h5>\n<ul>\n<li><strong>Definition<\/strong>: A block of reusable code that performs a specific task.<\/li>\n<li><strong>Syntax<\/strong>: Defined using the def keyword.<\/li>\n<li><strong>Arguments<\/strong>: Functions can take input parameters (arguments).<\/li>\n<li><strong>Return<\/strong>: They may return a value using the return\u00a0statement.<\/li>\n<\/ul>\n<p>Example: Python code<\/p>\n<p>def add(a, b):<br \/>\nreturn a + b<\/p>\n<h5><strong>9. What is the difference between local and global variables?<\/strong><\/h5>\n<p>Local variables are declared within a function and can only be accessed inside that function. Global variables are declared outside all functions and can be accessed anywhere in the program. Global variables can be accessed inside functions, but local variables cannot be accessed outside the function they are declared in.<\/p>\n<h5><strong>10. What are Python literals?<\/strong><\/h5>\n<ul>\n<li><strong>String Literal<\/strong>: &#8216;Hello&#8217; or &#8220;World&#8221;.<\/li>\n<li><strong>Numeric Literal<\/strong>: 10, 3.14.<\/li>\n<li><strong>Boolean Literal<\/strong>: True, False.<\/li>\n<li><strong>Special Literal<\/strong>: None, used to represent no value.<\/li>\n<\/ul>\n<h3><strong>Intermediate Python Questions<\/strong><\/h3>\n<h5><strong>11. Explain list comprehensions with an example.\u00a0<\/strong><\/h5>\n<p>List comprehensions provide a concise way to create lists. Instead of using loops, you can generate a list in a single line by applying an expression to each item of an existing list.<\/p>\n<p>Example:<\/p>\n<p>squares = [x**2 for x in range(5)] # Output: [0, 1, 4, 9, 16]\n<h5><strong>12. What are Python decorators?\u00a0<\/strong><\/h5>\n<p>A decorator is a function that modifies or extends another function without changing its source code. Common uses include logging, timing, caching, authentication, validation, and retry logic.<\/p>\n<p><strong>Example:<\/strong><\/p>\n<div>\n<figure>\n<div><code>import time from functools import wraps deftimer(func):@wraps(func)defwrapper(*args,**kwargs): start = time.perf_counter() result = func(*args,**kwargs)print(f\"{func.__name__} took {time.perf_counter()- start:.4f}s\")return result return wrapper @timerdefprocess_data():...<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>13. What is the difference between shallow copy and deep copy?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Shallow Copy<\/strong>: Creates a new object but copies references to nested objects. Changes in nested objects will affect both the original and the copy.<\/li>\n<li><strong>Deep Copy<\/strong>: Recursively copies all objects, creating an entirely new object. Changes in nested objects in the original do not affect the copy.<\/li>\n<\/ul>\n<h5><strong>14. What are the differences between append() and extend() in lists?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>append()<\/strong>: Adds a single element to the end of the list.<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">my_list = [1, 2]\nmy_list.append(3) # Output: [1, 2, 3]\n<ul>\n<li><strong>extend()<\/strong>: Adds multiple elements from another iterable to the list.<\/li>\n<\/ul>\n<div class=\"dark bg-gray-950 rounded-md border-[0.5px] border-token-border-medium\">\n<div class=\"flex items-center relative text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md\" style=\"padding-left: 80px;\">my_list.extend([4, 5]) # Output: [1, 2, 3, 4, 5]<\/div>\n<\/div>\n<h5><strong>15. <\/strong><strong>How do you handle exceptions in Python?<\/strong><\/h5>\n<p>Use <code>try<\/code> blocks for code that may fail, <code>except<\/code> blocks for specific expected errors, <code>else<\/code> for code that runs when no exception occurs, and <code>finally<\/code> for cleanup. Avoid broad <code>except Exception<\/code> blocks unless you log the error and handle it deliberately.<\/p>\n<p><strong>Example:<\/strong><\/p>\n<div>\n<figure>\n<div><code>try: value =int(user_input)except ValueError as error:print(f\"Invalid input: {error}\")else:print(f\"Processed value: {value}\")finally:print(\"Validation complete\")<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>16. What is a lambda function in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Anonymous Function<\/strong>: A function without a name.<\/li>\n<li><strong>Syntax<\/strong>: Defined using the lambda keyword.<\/li>\n<li><strong>Use Case<\/strong>: Used for short, simple functions.<\/li>\n<\/ul>\n<p>Example:<\/p>\n<p>add = lambda x, y: x + y<br \/>\nprint(add(2, 3)) # Output: 5<\/p>\n<h5><strong>17. What are the key differences between lists and dictionaries?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Lists<\/strong>: Ordered collections that store elements by index.<\/li>\n<li><strong>Dictionaries<\/strong>: Unordered collections that store key-value pairs. Lists allow duplicate elements, while dictionary keys must be unique.<\/li>\n<\/ul>\n<h5><strong>18. What are *args and kwargs in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>args<\/strong>: Allows you to pass a variable number of positional arguments to a function.<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">def add(*args):<br \/>\nreturn sum(args)<\/p>\n<ul>\n<li><strong>kwargs<\/strong>: Allows you to pass a variable number of keyword arguments (key-value pairs) to a function.<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">def print_values(**kwargs):<br \/>\nfor key, value in kwargs.items():<br \/>\nprint(f&#8221;{key}: {value}&#8221;)<\/p>\n<h5><strong>19. How can you sort a dictionary by value?\u00a0<\/strong><\/h5>\n<p>You can sort a dictionary by its values using the sorted( ) function and the items( )\u00a0method.<\/p>\n<p>Example:<\/p>\n<p>my_dict = {&#8216;a&#8217;: 2, &#8216;b&#8217;: 1, &#8216;c&#8217;: 3}<br \/>\nsorted_dict = dict(sorted(my_dict.items(), key=lambda item: item[1]))<br \/>\n# Output: {&#8216;b&#8217;: 1, &#8216;a&#8217;: 2, &#8216;c&#8217;: 3}<\/p>\n<h5><strong>20. Explain the difference between is and == in Python.\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>is<\/strong>: Checks whether two variables point to the same object in memory.<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">a = [1, 2]\nb = a<br \/>\nprint(a is b) # Output: True<\/p>\n<ul>\n<li><strong>==<\/strong>: Checks whether two variables have the same value.<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">c = [1, 2]\nprint(a == c) # Output: True<\/p>\n<h3><strong>Advanced Python Questions<\/strong><\/h3>\n<h5><strong>21. What are generators in Python?<\/strong><\/h5>\n<p>Generators are functions that return an iterator and allow you to iterate over large datasets efficiently. Instead of returning all items at once, they yield items one at a time, making them memory-efficient.<\/p>\n<p>Example:<\/p>\n<p>def count_up_to(max):<br \/>\ncount = 1<br \/>\nwhile count &lt;= max:<br \/>\nyield count<br \/>\ncount += 1<\/p>\n<h5><strong>22. Explain how Python handles memory management.\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Reference Counting<\/strong>: Each object has a reference count, which tracks the number of references to it.<\/li>\n<li><strong>Garbage Collection<\/strong>: Python uses a cyclic garbage collector to clean up unused objects that are involved in circular references.<\/li>\n<li><strong>Private Heap<\/strong>: All objects are stored in Python\u2019s private heap.<\/li>\n<\/ul>\n<h5><strong>23. What are metaclasses in Python?\u00a0<\/strong><\/h5>\n<p>A metaclass is the class of a class in Python. It defines how classes behave. Metaclasses allow you to control the creation of classes and modify their behavior. By using a metaclass, you can add extra functionality to classes or modify class properties.<\/p>\n<h5><strong>24. What is the Global Interpreter Lock (GIL) in Python?\u00a0<\/strong><\/h5>\n<p>In the standard CPython implementation, the GIL is a mutex that allows only one thread to execute Python bytecode at a time. It simplifies memory management and protects internal interpreter state, but it limits CPU-bound multithreading in the conventional build.<\/p>\n<p><strong>Important update:<\/strong> Starting with Python 3.13, CPython offers experimental <strong>free-threaded builds<\/strong> in which the GIL can be disabled. These builds can enable true parallel execution of Python threads, although free threading is not enabled by default and has compatibility and performance considerations.<\/p>\n<h5><strong>25. How do you handle file operations in Python?\u00a0<\/strong><\/h5>\n<p>Python provides built-in functions to handle file operations such as reading, writing, and appending. The most common functions are open( ), read( ), write( ), and close( ).<\/p>\n<p>Example:<\/p>\n<p>with open(&#8216;file.txt&#8217;, &#8216;r&#8217;) as file:<br \/>\ncontent = file.read()<\/p>\n<p style=\"text-align: center;\"><strong><a class=\"in-cell-link\" href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">Get hands-on with our Python course \u2013 sign up for a free demo!<\/a><\/strong><\/p>\n<h5><strong>26. What is monkey patching in Python?<\/strong><\/h5>\n<ul>\n<li><strong>Definition<\/strong>: Dynamically modifying or extending a class or module at runtime.<\/li>\n<li><strong>Use Case<\/strong>: Used in testing or when you need to alter behavior without changing the original code.<\/li>\n<\/ul>\n<p>Example:<\/p>\n<p>class A:<br \/>\ndef display(self):<br \/>\nprint(&#8220;Original&#8221;)<\/p>\n<p>def monkey_patched_display():<br \/>\nprint(&#8220;Monkey Patched&#8221;)<\/p>\n<p>A.display = monkey_patched_display<br \/>\na = A()<br \/>\na.display() # Output: Monkey Patched<\/p>\n<h5><strong>27. How do you implement inheritance in Python?\u00a0<\/strong><\/h5>\n<p>Inheritance allows one class (child) to inherit attributes and methods from another class (parent). Python supports single inheritance, multiple inheritance, and multilevel inheritance.<\/p>\n<p>Example:<\/p>\n<p>class Animal:<br \/>\ndef speak(self):<br \/>\nreturn &#8220;Animal Sound&#8221;<\/p>\n<p>class Dog(Animal):<br \/>\ndef speak(self):<br \/>\nreturn &#8220;Bark&#8221;<\/p>\n<h5><strong>28. What is the difference between an instance method, class method, and static method?<\/strong><\/h5>\n<p>An instance method receives <code>self<\/code> and operates on object state. A class method receives <code>cls<\/code> and operates on the class, often used for alternative constructors. A static method does not automatically receive <code>self<\/code> or <code>cls<\/code> and is used for utility logic related to the class.<\/p>\n<h5><strong>29. What is the difference between a class method and a static method?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Class Method<\/strong>:\n<ul>\n<li>Uses the @classmethod\u00a0decorator.<\/li>\n<li>Takes cls as the first argument, referring to the class.<\/li>\n<li>Can modify class state that applies to all instances.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Static Method<\/strong>:\n<ul>\n<li>Uses the @staticmethod\u00a0decorator.<\/li>\n<li>Does not take self or cls\u00a0as an argument.<\/li>\n<li>Cannot modify class or instance state.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>30. How can you implement multithreading in Python?<\/strong><\/h5>\n<p>Use multithreading for I\/O-bound work such as API calls, file reads, database queries, and network requests, because threads can overlap waiting time. Use multiprocessing for CPU-bound work such as heavy computation, image processing, or large numerical transformations, because separate processes can use multiple CPU cores.<\/p>\n<div>\n<div>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Workload<\/th>\n<th scope=\"col\">Better default<\/th>\n<th scope=\"col\">Reason<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>API calls, file I\/O, database queries<\/td>\n<td><code>threading<\/code> or <code>asyncio<\/code><\/td>\n<td>Threads can overlap waiting time<\/td>\n<\/tr>\n<tr>\n<td>CPU-heavy computation<\/td>\n<td><code>multiprocessing<\/code><\/td>\n<td>Processes use separate CPU cores<\/td>\n<\/tr>\n<tr>\n<td>Many concurrent network requests<\/td>\n<td><code>asyncio<\/code><\/td>\n<td>Efficient for high-concurrency I\/O<\/td>\n<\/tr>\n<tr>\n<td>Large-scale data transformation<\/td>\n<td>PySpark, Dask, or multiprocessing<\/td>\n<td>Distributes or parallelizes work<\/td>\n<\/tr>\n<tr>\n<td>Standard Python build, CPU-bound threads<\/td>\n<td><code>multiprocessing<\/code><\/td>\n<td>GIL limits CPU parallelism<\/td>\n<\/tr>\n<tr>\n<td>Free-threaded Python 3.13+ build<\/td>\n<td>Threads may parallelize<\/td>\n<td>GIL can be disabled, but support is still evolving<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<h5><strong>31. How do you use the map() function in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Definition<\/strong>: The map( )\u00a0function applies a function to all items in an input list.<\/li>\n<li><strong>Syntax<\/strong>: map(function, iterable).<\/li>\n<li><strong>Use Case<\/strong>: Useful for applying transformations to lists or other iterables.<\/li>\n<\/ul>\n<p>Example:<\/p>\n<p>numbers = [1, 2, 3, 4]\nsquared = list(map(lambda x: x**2, numbers)) # Output: [1, 4, 9, 16]\n<h3><strong>Object-Oriented Programming (OOP) in Python<\/strong><\/h3>\n<h5><strong>32. What is Object-Oriented Programming (OOP) in Python?\u00a0<\/strong><\/h5>\n<p>Object-Oriented Programming (OOP) is a paradigm that organizes code into objects, which contain data (attributes) and functions (methods). Python supports OOP, allowing you to create reusable and modular code.<\/p>\n<h5><strong>33. Explain the four pillars of OOP.<\/strong><\/h5>\n<ul>\n<li><strong>Encapsulation:<\/strong> Bundling data and behavior within a class and controlling access to internal state.<\/li>\n<li><strong>Abstraction:<\/strong> Exposing only necessary functionality while hiding implementation details.<\/li>\n<li><strong>Inheritance:<\/strong> Reusing behavior from a parent class.<\/li>\n<li><strong>Polymorphism:<\/strong> Using a common interface for different types, such as method overriding or duck typing.<\/li>\n<\/ul>\n<h5><strong>34. What is the difference between a class and an object? <\/strong><\/h5>\n<ul>\n<li><strong>Class<\/strong>:\n<ul>\n<li>A blueprint for creating objects.<\/li>\n<li>Defines properties and behavior.<\/li>\n<li>Example: class Dog: pass<\/li>\n<\/ul>\n<\/li>\n<li><strong>Object<\/strong>:\n<ul>\n<li>An instance of a class.<\/li>\n<li>Example: my_dog = Dog()<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>35. What is polymorphism in Python?\u00a0<\/strong><\/h5>\n<p>Polymorphism allows the same function or method to work in different ways depending on the object. For example, different classes can have methods with the same name, but the behavior will be specific to each class.<\/p>\n<p>Example:<\/p>\n<div class=\"dark bg-gray-950 rounded-md border-[0.5px] border-token-border-medium\">\n<div class=\"flex items-center relative text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md\">\n<p>class Dog:<br \/>\ndef sound(self):<br \/>\nreturn &#8220;Bark&#8221;<\/p>\n<p>class Cat:<br \/>\ndef sound(self):<br \/>\nreturn &#8220;Meow&#8221;<\/p>\n<p>def animal_sound(animal):<br \/>\nprint(animal.sound())<\/p>\n<p>dog = Dog()<br \/>\ncat = Cat()<\/p>\n<p>animal_sound(dog) # Output: Bark<br \/>\nanimal_sound(cat) # Output: Meow<\/p>\n<h5><strong>36. What is inheritance in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Definition<\/strong>: A class can inherit properties and methods from another class.<\/li>\n<li><strong>Parent Class<\/strong>: The class being inherited from.<\/li>\n<li><strong>Child Class<\/strong>: The class that inherits from the parent.<\/li>\n<\/ul>\n<p>Example:<\/p>\n<p>class Animal:<br \/>\ndef eat(self):<br \/>\nprint(&#8220;Eating&#8221;)<\/p>\n<p>class Dog(Animal):<br \/>\ndef bark(self):<br \/>\nprint(&#8220;Barking&#8221;)<\/p>\n<h3><strong>Error Handling<\/strong><\/h3>\n<h5><strong>37. What is exception handling in Python?\u00a0<\/strong><\/h5>\n<p>Exception handling in Python is done using the try, except, finally, and else\u00a0blocks. This allows you to manage errors gracefully, preventing the program from crashing when an error occurs.<\/p>\n<p>Example:<\/p>\n<p>try:<br \/>\nresult = 10 \/ 0<br \/>\nexcept ZeroDivisionError:<br \/>\nprint(&#8220;Cannot divide by zero!&#8221;)<br \/>\nfinally:<br \/>\nprint(&#8220;Execution complete.&#8221;)<\/p>\n<h5><strong>38. What is the difference between syntax errors and exceptions? <\/strong><\/h5>\n<ul>\n<li><strong>Syntax Error<\/strong>:\n<ul>\n<li>Occurs when the code has incorrect syntax.<\/li>\n<li>Detected by the interpreter before execution.<\/li>\n<li>Example: if a == 3 print(&#8220;Hello&#8221;) (missing :).<\/li>\n<\/ul>\n<\/li>\n<li><strong>Exception<\/strong>:\n<ul>\n<li>Occurs during program execution.<\/li>\n<li>Detected when the program encounters an unexpected condition.<\/li>\n<li>Example: Division by zero error.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>File Handling<\/strong><\/h3>\n<h5><strong>39. How do you open and read a file in Python?\u00a0<\/strong><\/h5>\n<p>You can open and read a file using the open( ) function in Python. Files can be opened in different modes like read (&#8216;r&#8217;), write (&#8216;w&#8217;), append (&#8216;a&#8217;), and more.<\/p>\n<p>Example:<\/p>\n<p>with open(&#8216;file.txt&#8217;, &#8216;r&#8217;) as file:<br \/>\ncontent = file.read()<br \/>\nprint(content)<\/p>\n<h5><strong>40. What is the difference between read(), readline(), and readlines()?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>read()<\/strong>:\n<ul>\n<li>Reads the entire content of the file as a single string.<\/li>\n<\/ul>\n<\/li>\n<li><strong>readline()<\/strong>:\n<ul>\n<li>Reads a single line from the file.<\/li>\n<\/ul>\n<\/li>\n<li><strong>readlines()<\/strong>:\n<ul>\n<li>Reads all lines and returns them as a list of strings.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>Data Structures<\/strong><\/h3>\n<h5><strong>41. What are Python\u2019s common built-in data structures?<\/strong><\/h5>\n<p>The main built-in structures are lists, tuples, dictionaries, and sets. Lists are ordered and mutable; tuples are ordered and immutable; dictionaries store key-value pairs and preserve insertion order; sets store unique, unordered elements.<\/p>\n<h5><strong>42. What is a dictionary in Python?\u00a0<\/strong><\/h5>\n<p>A dictionary is a built-in data structure that stores data in key-value pairs. Dictionaries are mutable and allow for fast retrieval of values using keys.<\/p>\n<p>Example:<\/p>\n<p>my_dict = {&#8216;name&#8217;: &#8216;John&#8217;, &#8216;age&#8217;: 30}<br \/>\nprint(my_dict[&#8216;name&#8217;]) # Output: John<\/p>\n<h5><strong>43. How do you merge two dictionaries in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Using the update( )\u00a0method<\/strong>:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">dict1 = {&#8216;a&#8217;: 1}<br \/>\ndict2 = {&#8216;b&#8217;: 2}<br \/>\ndict1.update(dict2) # Output: {&#8216;a&#8217;: 1, &#8216;b&#8217;: 2}<\/p>\n<ul>\n<li><strong>Using the * *\u00a0operator<\/strong>:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">merged_dict = {**dict1, **dict2}<\/p>\n<h5><strong>44. What is a set in Python, and how does it differ from a list?<\/strong><\/h5>\n<ul>\n<li><strong>Set<\/strong>:\n<ul>\n<li>An unordered collection of unique elements.<\/li>\n<li>Defined using curly braces: {1, 2, 3}.<\/li>\n<li>No duplicate values.<\/li>\n<\/ul>\n<\/li>\n<li><strong>List<\/strong>:\n<ul>\n<li>An ordered collection of elements.<\/li>\n<li>Defined using square brackets: [1, 2, 3].<\/li>\n<li>Allows duplicate values.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>45. How would you find duplicate values in a list?<\/strong><\/h5>\n<div>\n<figure><figcaption><\/figcaption><div><code>deffind_duplicates(values): seen =set() duplicates =set()for value in values:if value in seen: duplicates.add(value)else: seen.add(value)returnlist(duplicates)<\/code><\/div>\n<\/figure>\n<\/div>\n<p><strong>Complexity:<\/strong> O(n) time and O(n) space.<\/p>\n<h5><strong>46. How would you reverse a string without using slicing?<\/strong><\/h5>\n<div>\n<figure>\n<div><code>defreverse_string(text): characters =list(text) left, right =0,len(characters)-1while left &lt; right: characters[left], characters[right]= characters[right], characters[left] left +=1 right -=1return\"\".join(characters)<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>47. How would you check whether two strings are anagrams<\/strong><\/h5>\n<div>\n<figure>\n<div><code>from collections import Counter defare_anagrams(first, second):return Counter(first.lower())== Counter(second.lower())<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>48. How would you find the second-highest salary in SQL?<\/strong><\/h5>\n<div>\n<figure>\n<div><code>SELECTMAX(salary)AS second_highest_salary FROM employees WHERE salary &lt;(SELECTMAX(salary)FROM employees );<\/code><\/div>\n<\/figure>\n<\/div>\n<p><strong>Alternative using a window function:<\/strong><\/p>\n<div>\n<figure><figcaption>sql<\/figcaption><div><code>SELECTDISTINCT salary FROM(SELECT salary, DENSE_RANK()OVER(ORDERBY salary DESC)AS salary_rank FROM employees ) ranked_salaries WHERE salary_rank =2;<\/code><\/div>\n<\/figure>\n<\/div>\n<p>SQL is especially important for Deloitte analyst and data-engineering interviews; recent interview guides report joins, <code>GROUP BY<\/code>, window functions, ranking, and second-highest-salary questions as common areas.<\/p>\n<h3><strong>Data Manipulation<\/strong><\/h3>\n<h5><strong>49. How do you remove duplicates from a list in Python?\u00a0<\/strong><\/h5>\n<p>You can remove duplicates from a list by converting it to a set, which automatically removes duplicates. You can then convert it back to a list if needed.<\/p>\n<p>Example:<\/p>\n<p>my_list = [1, 2, 2, 3, 3]\nunique_list = list(set(my_list))<br \/>\nprint(unique_list) # Output: [1, 2, 3]\n<h5><strong>50. What are the different ways to concatenate strings in Python?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Using the &#8216;+&#8217; operator<\/strong>:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">s1 = &#8220;Hello&#8221;<br \/>\ns2 = &#8220;World&#8221;<br \/>\nresult = s1 + &#8221; &#8221; + s2 # Output: &#8220;Hello World&#8221;<\/p>\n<ul>\n<li><strong>Using the join( )\u00a0method<\/strong>:<\/li>\n<\/ul>\n<p style=\"padding-left: 80px;\">result = &#8221; &#8220;.join([s1, s2]) # Output: &#8220;Hello World&#8221;<\/p>\n<h3><strong>Regular Expressions<\/strong><\/h3>\n<h5><strong>51. What are regular expressions in Python?\u00a0<\/strong><\/h5>\n<p>Regular expressions (regex) are sequences of characters that define search patterns. In Python, you can use the &#8216;re&#8217;\u00a0module to work with regular expressions for pattern matching and text manipulation.<\/p>\n<p>Example:<\/p>\n<p>import re<br \/>\npattern = r&#8217;\\d+&#8217; # Matches one or more digits<br \/>\nresult = re.findall(pattern, &#8216;There are 3 cats and 4 dogs.&#8217;)<br \/>\nprint(result) # Output: [&#8216;3&#8217;, &#8216;4&#8217;]\n<h5><strong>52. What is the difference between re.search() and re.findall( )?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>re.search()<\/strong>:\n<ul>\n<li>Returns the first match found in the string.<\/li>\n<\/ul>\n<\/li>\n<li><strong>re.findall()<\/strong>:\n<ul>\n<li>Returns all matches found in the string as a list.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>Iterators and Generators<\/strong><\/h3>\n<h5><strong>53. What are iterators in Python?\u00a0<\/strong><\/h5>\n<p>An iterator is an object that allows you to iterate over a collection of elements one at a time. In Python, an object is an iterator if it implements the __iter__( ) and __next__( )\u00a0methods.<\/p>\n<p>Example:<\/p>\n<div class=\"dark bg-gray-950 rounded-md border-[0.5px] border-token-border-medium\">\n<div class=\"flex items-center relative text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md\">my_list = [1, 2, 3]\niterator = iter(my_list)<br \/>\nprint(next(iterator)) # Output: 1<\/div>\n<\/div>\n<\/div>\n<div>\n<h5><strong>54. How is a generator different from an iterator?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Generator<\/strong>:\n<ul>\n<li>A type of iterator that yields items lazily (one at a time).<\/li>\n<li>Defined using the yield keyword.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Iterator<\/strong>:\n<ul>\n<li>A general object used for iterating over collections.<\/li>\n<li>Requires implementing __iter__( ) and __next__( )\u00a0methods.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>Concurrency and Parallelism<\/strong><\/h3>\n<h5><strong>55. How can you achieve parallelism in Python?<\/strong><\/h5>\n<p>Parallelism in Python can be achieved using the multiprocessing\u00a0module, which allows you to run multiple processes in parallel, taking advantage of multiple CPU cores.<\/p>\n<p>Example:<\/p>\n<\/div>\n<div class=\"flex items-center relative text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md\">\n<p>from multiprocessing import Pool<\/p>\n<p>def square(n):<br \/>\nreturn n * n<\/p>\n<p>with Pool(5) as p:<br \/>\nresult = p.map(square, [1, 2, 3, 4, 5])<br \/>\nprint(result) # Output: [1, 4, 9, 16, 25]\n<h5><strong>56. What is the difference between threading and multiprocessing?\u00a0<\/strong><\/h5>\n<ul>\n<li><strong>Threading<\/strong>:\n<ul>\n<li>Allows multiple threads within a single process.<\/li>\n<li>Limited by the Global Interpreter Lock (GIL).<\/li>\n<li>Suitable for I\/O-bound tasks.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Multiprocessing<\/strong>:\n<ul>\n<li>Runs separate processes, each with its own Python interpreter.<\/li>\n<li>Can achieve true parallelism.<\/li>\n<li>Suitable for CPU-bound tasks.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5><strong>57. What is the difference between concurrency and parallelism?<\/strong><\/h5>\n<p>Concurrency means managing multiple tasks that may be in progress during the same period. Parallelism means actually executing tasks at the same time, usually on multiple CPU cores. A program can be concurrent without being parallel\u2014for example, <code>asyncio<\/code> handles many waiting I\/O tasks but runs on one thread.<\/p>\n<p><strong>58. How would you improve the performance of a slow Python script?<\/strong><\/p>\n<p>First profile the code to identify the real bottleneck rather than guessing. Then optimize the algorithm or data structure, reduce repeated computation, use vectorized Pandas\/NumPy operations instead of Python loops, cache repeated results, parallelize independent work, and consider compiled libraries or distributed processing for large-scale workloads.<\/p>\n<h3><strong>Data Science Libraries<\/strong><\/h3>\n<h5><strong>59. What is Pandas, and how is it used in Python?\u00a0<\/strong><\/h5>\n<p>Pandas is a powerful Python library used for data manipulation and analysis. It provides data structures like DataFrame and Series, which are designed for handling structured data efficiently.<\/p>\n<p>Example:<\/p>\n<p>import pandas as pd<br \/>\ndata = {&#8216;name&#8217;: [&#8216;John&#8217;, &#8216;Anna&#8217;], &#8216;age&#8217;: [30, 25]}<br \/>\ndf = pd.DataFrame(data)<br \/>\nprint(df)<\/p>\n<h5><strong>60. What is the difference between <code>loc<\/code> and <code>iloc<\/code>?<\/strong><\/h5>\n<p><code>loc<\/code> selects data by label, while <code>iloc<\/code> selects data by integer position. For example, <code>df.loc[0, \"salary\"]<\/code> selects the row labeled <code>0<\/code> and the column named <code>\"salary\"<\/code>, whereas <code>df.iloc[0, 2]<\/code> selects the first row and third column by position.<\/p>\n<h5><strong>61. How do you handle missing values in Pandas?<\/strong><\/h5>\n<p>First investigate why values are missing; do not automatically fill them. Then choose a strategy based on the data and business context: remove rows or columns if missingness is limited and justified, fill numeric values with median or model-based imputation when appropriate, fill categorical values with a known category such as <code>\"Unknown\"<\/code>, or flag missingness as a separate feature.<\/p>\n<div>\n<figure>\n<div><code>df[\"age\"]= df[\"age\"].fillna(df[\"age\"].median()) df[\"city\"]= df[\"city\"].fillna(\"Unknown\")<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>62. What is the difference between <code>merge<\/code>, <code>join<\/code>, and <code>concat<\/code>?<\/strong><\/h5>\n<p><code>merge<\/code> combines DataFrames using common columns or indexes, similar to SQL joins. <code>join<\/code> combines DataFrames primarily on indexes. <code>concat<\/code> stacks DataFrames vertically or horizontally and is useful when combining datasets with the same structure.<\/p>\n<h5><strong>63. How would you find total sales by region and month?<\/strong><\/h5>\n<div>\n<figure>\n<div><code>sales.groupby([\"region\",\"month\"], as_index=False)[\"revenue\"].sum()<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>64. How would you remove duplicates and standardize inconsistent values?<\/strong><\/h5>\n<div>\n<figure>\n<div><code>df = df.drop_duplicates() df[\"city\"]=( df[\"city\"].str.strip().str.title().replace({\"Nyc\":\"New York City\",\"Bangalore\":\"Bengaluru\"}))<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>65.\u00a0 How would you investigate a sudden drop in monthly sales?<\/strong><\/h5>\n<p>I would first validate the data: check missing records, duplicate entries, date filters, currency or unit changes, and reporting-period alignment. Then I would segment the drop by region, product, customer segment, channel, and acquisition source. I would compare the period with the prior period and same period last year, identify whether the decline is broad or concentrated, and distinguish a data issue from a genuine business change. Finally, I would summarize the likely drivers, quantify their impact, and recommend next actions.<\/p>\n<p style=\"text-align: center;\"><strong><a class=\"in-cell-link\" href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">Get hands-on with our Python course \u2013 sign up for a free demo!<\/a><\/strong><\/p>\n<h3><strong>SQL, Git, testing, and APIs<\/strong><\/h3>\n<h5><strong>66. What is the difference between <code>INNER JOIN<\/code>, <code>LEFT JOIN<\/code>, and <code>FULL OUTER JOIN<\/code>?<\/strong><\/h5>\n<p>An <code>INNER JOIN<\/code> returns only matching rows from both tables. A <code>LEFT JOIN<\/code> returns all rows from the left table and matching rows from the right table, with <code>NULL<\/code> where no match exists. A <code>FULL OUTER JOIN<\/code> returns all rows from both tables, matching where possible.<\/p>\n<h5><strong>67. What is the difference between <code>WHERE<\/code> and <code>HAVING<\/code>?<\/strong><\/h5>\n<p><code>WHERE<\/code> filters individual rows before grouping. <code>HAVING<\/code> filters groups after aggregation.<\/p>\n<div>\n<figure>\n<div><code>SELECT region,SUM(revenue)AS total_revenue FROM sales WHERE sale_date &gt;='2026-01-01'GROUPBY region HAVINGSUM(revenue)&gt;100000;<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>68. What are window functions?<\/strong><\/h5>\n<p>Window functions perform calculations across a set of rows while retaining each row in the output. Common examples include <code>ROW_NUMBER()<\/code>, <code>RANK()<\/code>, <code>DENSE_RANK()<\/code>, <code>LAG()<\/code>, <code>LEAD()<\/code>, and running totals.<\/p>\n<div>\n<figure><figcaption>sql<\/figcaption><div><code>SELECT employee_id, department, salary, RANK()OVER(PARTITIONBY department ORDERBY salary DESC)AS salary_rank FROM employees;<\/code><\/div>\n<\/figure>\n<\/div>\n<h3><strong>Git, testing, and APIs<\/strong><\/h3>\n<h5><strong>69. What is Git, and why is it important?<\/strong><\/h5>\n<p>Git is a distributed version-control system that tracks changes to code and enables collaboration. It allows developers to create branches, review changes, merge work, revert mistakes, and maintain a history of a project.<\/p>\n<h5><strong>70. What is unit testing?<\/strong><\/h5>\n<p>Unit testing verifies that individual components, such as a function or class, behave as expected. In Python, <code>pytest<\/code> is commonly used to write test cases, assert expected outputs, and catch regressions before deployment.<\/p>\n<h5><strong>71. How would you call a REST API in Python?<\/strong><\/h5>\n<div>\n<figure>\n<div><code>import requests response = requests.get(\"https:\/\/api.example.com\/v1\/customers\", headers={\"Authorization\":\"Bearer &lt;token&gt;\"}, timeout=10,) response.raise_for_status() data = response.json()<\/code><\/div>\n<\/figure>\n<\/div>\n<h5><strong>72. How would you handle API failures?<\/strong><\/h5>\n<p>Use timeouts, validate status codes, catch specific exceptions, retry transient failures with exponential backoff, log failures, and avoid exposing secrets in code. For production systems, add monitoring and alerting.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Deloitte_Python_Interview_Questions_Conclusion\"><\/span><strong>Deloitte Python Interview Questions: Conclusion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The strongest Deloitte candidates do more than recall Python definitions. They can write reliable code, clean and analyze data, explain their reasoning clearly, discuss trade-offs, and connect technical work to business outcomes.<\/p>\n<p>Focus your preparation on Python fundamentals, SQL, Pandas, practical projects, and clear communication. For data-oriented roles, add PySpark, cloud basics, ETL concepts, and data-quality scenarios. For developer roles, add Git, testing, APIs, databases, and system-design fundamentals.<\/p>\n<p>Practice explaining your work aloud, reviewing your projects critically, and answering follow-up questions. That combination of technical competence and consulting-ready communication is what makes a candidate stand out in a Deloitte interview.<\/p>\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\">\n<p style=\"text-align: center;\"><b>Related Articles<\/b><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/wipro-python-interview-questions-for-freshers\/\" target=\"_blank\" rel=\"noopener\"><strong>15 Wipro Python Questions for Freshers<\/strong><\/a><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/tcs-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><strong>20 TCS Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/ericsson-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><b>15 Ericsson Python Interview Questions<\/b><\/a><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/accenture-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><strong>25 Accenture Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/infosys-python-interview-questions-for-freshers\/\" target=\"_blank\" rel=\"noopener\"><strong>15 Infosys Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/cts-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><strong>15 CTS Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/pwc-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><strong>25 PWC Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<td>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/blog\/oracle-python-interview-questions\/\" target=\"_blank\" rel=\"noopener\"><strong>21 Oracle Python Interview Questions<\/strong><\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"modal\" id=\"modal25556851\"><div class=\"modal-content\"><span class=\"close-button\">&times;<\/span>\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f25556851-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"25556851\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/blog\/wp-json\/wp\/v2\/posts\/25591440#wpcf7-f25556851-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"25556851\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f25556851-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_wpcf7cf_hidden_group_fields\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_hidden_groups\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_visible_groups\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_repeaters\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_steps\" value=\"{}\" \/><input type=\"hidden\" name=\"_wpcf7cf_options\" value=\"{&quot;form_id&quot;:25556851,&quot;conditions&quot;:[],&quot;settings&quot;:{&quot;animation&quot;:&quot;yes&quot;,&quot;animation_intime&quot;:200,&quot;animation_outtime&quot;:200,&quot;conditions_ui&quot;:&quot;normal&quot;,&quot;notice_dismissed&quot;:false,&quot;repeater_remove_button&quot;:&quot;bottom&quot;,&quot;notice_dismissed_update-cf7-5.9.8&quot;:true,&quot;notice_dismissed_update-cf7-6.1.1&quot;:true}}\" \/>\n<\/fieldset>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"full_name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Name\" value=\"\" type=\"text\" name=\"full_name\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"phone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Phone\" value=\"\" type=\"tel\" name=\"phone\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"email_id\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-text wpcf7-validates-as-email\" aria-invalid=\"false\" placeholder=\"Email\" value=\"\" type=\"email\" name=\"email_id\" \/><\/span>\n<\/p>\n<div class=\"custom-form-group-1\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"language\"><select class=\"wpcf7-form-control wpcf7-select wpcf7-validates-as-required language-select1\" aria-required=\"true\" aria-invalid=\"false\" name=\"language\"><option value=\"\">Select Language<\/option><option value=\"Malayalam\">Malayalam<\/option><option value=\"Tamil\">Tamil<\/option><option value=\"Telugu\">Telugu<\/option><option value=\"Kannada\">Kannada<\/option><\/select><\/span>\n\t<\/p>\n<\/div>\n<div class=\"custom-form-group-1\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"course\"><select class=\"wpcf7-form-control wpcf7-select wpcf7-validates-as-required course-select1\" aria-required=\"true\" aria-invalid=\"false\" name=\"course\"><option value=\"\">Select an option<\/option><option value=\"Kerala PSC Exams\">Kerala PSC Exams<\/option><option value=\"Kerala PSC Teaching Exams\">Kerala PSC Teaching Exams<\/option><option value=\"Kerala PSC Technical Exams\">Kerala PSC Technical Exams<\/option><option value=\"SSC\/RRB\">SSC\/RRB<\/option><option value=\"GATE\">GATE<\/option><option value=\"Banking &amp; Insurance\">Banking &amp; Insurance<\/option><option value=\"Coding\">Coding<\/option><option value=\"Commerce\">Commerce<\/option><option value=\"Personal Finance\">Personal Finance<\/option><option value=\"Spoken English\/Personality Dev\">Spoken English\/Personality Dev<\/option><option value=\"German Language\">German Language<\/option><option value=\"Montessori Teacher Training\">Montessori Teacher Training<\/option><option value=\"IELTS\">IELTS<\/option><option value=\"MEP\">MEP<\/option><option value=\"Quantity Surveying\">Quantity Surveying<\/option><option value=\"Structural Design\">Structural Design<\/option><option value=\"Yoga TTC\">Yoga TTC<\/option><option value=\"Digital Marketing\">Digital Marketing<\/option><option value=\"Hospital and Healthcare Administration\">Hospital and Healthcare Administration<\/option><option value=\"BIM\">BIM<\/option><option value=\"HR Management\">HR Management<\/option><option value=\"Embedded System Software Engineering\">Embedded System Software Engineering<\/option><\/select><\/span>\n\t<\/p>\n<\/div>\n<div class=\"custom-form-group-1\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"course_name\"><select class=\"wpcf7-form-control wpcf7-select wpcf7-validates-as-required course-name-select1\" aria-required=\"true\" aria-invalid=\"false\" name=\"course_name\"><option value=\"\">Select an option<\/option><option value=\"KAS\">KAS<\/option><option value=\"Degree level\">Degree level<\/option><option value=\"12th level\">12th level<\/option><option value=\"10th level\">10th level<\/option><option value=\"Secretariat Assistant\">Secretariat Assistant<\/option><option value=\"LDC\">LDC<\/option><option value=\"LGS\">LGS<\/option><option value=\"University Assistant\">University Assistant<\/option><option value=\"FSO\">FSO<\/option><option value=\"VEO\">VEO<\/option><option value=\"VFA\">VFA<\/option><option value=\"Dental Surgeon\">Dental Surgeon<\/option><option value=\"Staff Nurse\">Staff Nurse<\/option><option value=\"Sub Inspector\">Sub Inspector<\/option><option value=\"Divisional Accountant\">Divisional Accountant<\/option><option value=\"Fireman\/Firewomen\/Driver\">Fireman\/Firewomen\/Driver<\/option><option value=\"CPO\/WCPO\/Driver\">CPO\/WCPO\/Driver<\/option><option value=\"Excise\">Excise<\/option><option value=\"LD Typist\">LD Typist<\/option><option value=\"Junior Health Inspector\">Junior Health Inspector<\/option><option value=\"Assistant Jailor\">Assistant Jailor<\/option><option value=\"Kerala High Court Assistant\">Kerala High Court Assistant<\/option><option value=\"Beat Forest Officer\">Beat Forest Officer<\/option><option value=\"Junior Employment Officer\">Junior Employment Officer<\/option><option value=\"Junior Lab Assistant\">Junior Lab Assistant<\/option><option value=\"Dewaswom Board LDC\">Dewaswom Board LDC<\/option><option value=\"LSGS\">LSGS<\/option><option value=\"SBCID\">SBCID<\/option><option value=\"IRB Regular wing\">IRB Regular wing<\/option><option value=\"Assistant Salesman\">Assistant Salesman<\/option><option value=\"Secretariat OA\">Secretariat OA<\/option><option value=\"Driver Cum OA\">Driver Cum OA<\/option><option value=\"Departmental Test\">Departmental Test<\/option><option value=\"HSST\">HSST<\/option><option value=\"HSA\">HSA<\/option><option value=\"SET\">SET<\/option><option value=\"KTET\">KTET<\/option><option value=\"LP UP\">LP UP<\/option><option value=\"KVS\">KVS<\/option><option value=\"Finger Print Searcher\">Finger Print Searcher<\/option><option value=\"Nursery School Teacher\">Nursery School Teacher<\/option><option value=\"Railway Teacher\">Railway Teacher<\/option><option value=\"Scientific Officer\">Scientific Officer<\/option><option value=\"Probation Officer\">Probation Officer<\/option><option value=\"ICDS\">ICDS<\/option><option value=\"Welfare Officer Gr. II\">Welfare Officer Gr. II<\/option><option value=\"Assistant Professor\">Assistant Professor<\/option><option value=\"CTET\">CTET<\/option><option value=\"UGC NET\">UGC NET<\/option><option value=\"Sanitary Chemist\">Sanitary Chemist<\/option><option value=\"AE\">AE<\/option><option value=\"IEO\">IEO<\/option><option value=\"Electrician\">Electrician<\/option><option value=\"KSEB AE\/Sub Engineer\">KSEB AE\/Sub Engineer<\/option><option value=\"Kerala Agro Industries AE\">Kerala Agro Industries AE<\/option><option value=\"Overseer\/Draftsman\">Overseer\/Draftsman<\/option><option value=\"Lecturer in Polytechnic\">Lecturer in Polytechnic<\/option><option value=\"LSGD AE\">LSGD AE<\/option><option value=\"Devaswom Work Superintendent\">Devaswom Work Superintendent<\/option><option value=\"Devaswom Board Lineman\">Devaswom Board Lineman<\/option><option value=\"Devaswom Board Plumber\">Devaswom Board Plumber<\/option><option value=\"Assistant Town Planner\">Assistant Town Planner<\/option><option value=\"AAI ATC\">AAI ATC<\/option><option value=\"Central Govt PSU\">Central Govt PSU<\/option><option value=\"RRB ALP\">RRB ALP<\/option><option value=\"RRB JE\">RRB JE<\/option><option value=\"GATE\">GATE<\/option><option value=\"Skilled Assistant\">Skilled Assistant<\/option><option value=\"Workshop Instructor\">Workshop Instructor<\/option><option value=\"AMVI\">AMVI<\/option><option value=\"Technician gr 1\">Technician gr 1<\/option><option value=\"Technician gr 3\">Technician gr 3<\/option><option value=\"Assistant Professor - Tech\">Assistant Professor - Tech<\/option><option value=\"KSEB Worker\">KSEB Worker<\/option><option value=\"SSC CGL\">SSC CGL<\/option><option value=\"SSC CHSL\">SSC CHSL<\/option><option value=\"SSC CPO\">SSC CPO<\/option><option value=\"SSC MTS\">SSC MTS<\/option><option value=\"SSC GD Constable\">SSC GD Constable<\/option><option value=\"SSC JE\">SSC JE<\/option><option value=\"SSC Stenographer\">SSC Stenographer<\/option><option value=\"SSC JHT\">SSC JHT<\/option><option value=\"SSC Selection Post\">SSC Selection Post<\/option><option value=\"SSC Scientific Assistant IMD\">SSC Scientific Assistant IMD<\/option><option value=\"SSC Phase IX\/XI Selection Posts\">SSC Phase IX\/XI Selection Posts<\/option><option value=\"RRB NTPC\">RRB NTPC<\/option><option value=\"RRB Group D\">RRB Group D<\/option><option value=\"RRB Paramedical\">RRB Paramedical<\/option><option value=\"RRB Ministerial and Isolated Categories\">RRB Ministerial and Isolated Categories<\/option><option value=\"RRB RPF\">RRB RPF<\/option><option value=\"IBPS PO\">IBPS PO<\/option><option value=\"IBPS Clerk\">IBPS Clerk<\/option><option value=\"IBPS SO\">IBPS SO<\/option><option value=\"IBPS RRB PO\">IBPS RRB PO<\/option><option value=\"IBPS RRB Clerk\">IBPS RRB Clerk<\/option><option value=\"SBI PO\">SBI PO<\/option><option value=\"SBI Clerk\">SBI Clerk<\/option><option value=\"SBI SO\">SBI SO<\/option><option value=\"RBI Grade B\">RBI Grade B<\/option><option value=\"RBI Assistant\">RBI Assistant<\/option><option value=\"NABARD Grade A\">NABARD Grade A<\/option><option value=\"NABARD Grade B\">NABARD Grade B<\/option><option value=\"SIDBI Grade A\">SIDBI Grade A<\/option><option value=\"Insurance Exams\">Insurance Exams<\/option><option value=\"Federal Bank Exams\">Federal Bank Exams<\/option><option value=\"Union Bank of India Exams\">Union Bank of India Exams<\/option><option value=\"Full Stack Development Course\">Full Stack Development Course<\/option><option value=\"Data Science Course\">Data Science Course<\/option><option value=\"Data Analytics Course\">Data Analytics Course<\/option><option value=\"Software Testing Course\">Software Testing Course<\/option><option value=\"Python Programming Course\">Python Programming Course<\/option><option value=\"UI\/UX\">UI\/UX<\/option><option value=\"AWS Course\">AWS Course<\/option><option value=\"Flutter\">Flutter<\/option><option value=\"Cybersecurity\">Cybersecurity<\/option><option value=\"Practical Accounting Course\">Practical Accounting Course<\/option><option value=\"SAP FICO Course\">SAP FICO Course<\/option><option value=\"SAP MM Course\">SAP MM Course<\/option><option value=\"SAP SD Course\">SAP SD Course<\/option><option value=\"PwC Edge: Strategic Accounting &amp; Finance Programme\">PwC Edge: Strategic Accounting &amp; Finance Programme<\/option><option value=\"ACCA\">ACCA<\/option><option value=\"Tally\">Tally<\/option><option value=\"UAE Accounting\">UAE Accounting<\/option><option value=\"GST\">GST<\/option><option value=\"Stock Market Course\">Stock Market Course<\/option><option value=\"Mutual Funds\">Mutual Funds<\/option><option value=\"Forex Trading\">Forex Trading<\/option><option value=\"Kerala PSC Exams\">Kerala PSC Exams<\/option><option value=\"Kerala PSC Teaching Exams\">Kerala PSC Teaching Exams<\/option><option value=\"Kerala PSC Technical Exams\">Kerala PSC Technical Exams<\/option><option value=\"SSC\/RRB\">SSC\/RRB<\/option><option value=\"GATE\">GATE<\/option><option value=\"Banking &amp; Insurance\">Banking &amp; Insurance<\/option><option value=\"Coding\">Coding<\/option><option value=\"Commerce\">Commerce<\/option><option value=\"Personal Finance\">Personal Finance<\/option><option value=\"Spoken English\/Personality Dev\">Spoken English\/Personality Dev<\/option><option value=\"German Language\">German Language<\/option><option value=\"Montessori Teacher Training\">Montessori Teacher Training<\/option><option value=\"IELTS\">IELTS<\/option><option value=\"MEP\">MEP<\/option><option value=\"Quantity Surveying\">Quantity Surveying<\/option><option value=\"Structural Design\">Structural Design<\/option><option value=\"Yoga TTC\">Yoga TTC<\/option><option value=\"Digital Marketing\">Digital Marketing<\/option><option value=\"Hospital and Healthcare Administration\">Hospital and Healthcare Administration<\/option><option value=\"BIM\">BIM<\/option><option value=\"HR Management\">HR Management<\/option><option value=\"Embedded System Software Engineering\">Embedded System Software Engineering<\/option><\/select><\/span>\n\t<\/p>\n<\/div>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"education\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Educational qualification\" value=\"\" type=\"text\" name=\"education\" \/><\/span>\n<\/p>\n<div style=\"display:none\">\n<input class=\"wpcf7-form-control wpcf7-hidden utm-source\" value=\"\" type=\"hidden\" name=\"utm_source\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden utm-medium\" value=\"\" type=\"hidden\" name=\"utm_medium\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden utm-campaign\" value=\"\" type=\"hidden\" name=\"utm_campaign\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden utm-content\" value=\"\" type=\"hidden\" name=\"utm_content\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden utm-term\" value=\"\" type=\"hidden\" name=\"utm_term\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden blog-url\" value=\"\" type=\"hidden\" name=\"blog_url\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden post-category-name\" value=\"\" type=\"hidden\" name=\"post_category_name\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden post-author-name\" value=\"\" type=\"hidden\" name=\"post_author_name\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden file-url\" value=\"\" type=\"hidden\" name=\"file_url\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden video-url\" value=\"\" type=\"hidden\" name=\"video_url\" \/>\n<input class=\"wpcf7-form-control wpcf7-hidden courseid\" value=\"\" type=\"hidden\" name=\"course_id\" \/>\n<\/div>\n<div class=\"cf7-cf-turnstile\" style=\"margin-top: 0px; margin-bottom: -15px;\"> <div id=\"cf-turnstile-cf7-499073742\" class=\"cf-turnstile\" data-sitekey=\"0x4AAAAAABVigxtkiZeGTu5L\" data-theme=\"light\" data-language=\"auto\" data-size=\"normal\" data-retry=\"auto\" data-retry-interval=\"1000\" data-refresh-expired=\"auto\" data-refresh-timeout=\"auto\" data-action=\"contact-form-7\" data-callback=\"turnstileCF7Callback\" data-appearance=\"always\"><\/div> <br class=\"cf-turnstile-br cf-turnstile-br-cf7-499073742\"> <style>#cf-turnstile-cf7-499073742 { margin-left: -15px; }<\/style> <script>document.addEventListener(\"DOMContentLoaded\",function(){document.querySelectorAll('.wpcf7-form').forEach(function(e){e.addEventListener('submit',function(){if(document.getElementById('cf-turnstile-cf7-499073742')){setTimeout(function(){turnstile.reset('#cf-turnstile-cf7-499073742');},1000)}})})});<\/script> <\/div><br\/><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Submit\" \/>\n<\/p><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n<\/div><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>This guide offers questions, answers, and tips for your Deloitte Python interview. It includes preparation advice and common Deloitte Python Interview Questions. Follow the tips given to increase your chances of success. You&#8217;ll be well-prepared for your technical interview with Deloitte after reading this. Let us start with the introduction to Deloitte. Check out this [&hellip;]<\/p>\n","protected":false},"author":42,"featured_media":25591441,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[802,1903,1841,1888],"tags":[],"class_list":["post-25591440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles","category-coding","category-entri-skilling","category-python-programming"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Deloitte Python Interview Questions 2027 (Updated)<\/title>\n<meta name=\"description\" content=\"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Deloitte Python Interview Questions 2027 (Updated)\" \/>\n<meta property=\"og:description\" content=\"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/\" \/>\n<meta property=\"og:site_name\" content=\"Entri Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/entri.me\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-08-24T06:14:03+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-11-09T11:46:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png\" \/>\n\t<meta property=\"og:image:width\" content=\"820\" \/>\n\t<meta property=\"og:image:height\" content=\"615\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Famida\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@entri_app\" \/>\n<meta name=\"twitter:site\" content=\"@entri_app\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Famida\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"22 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/\"},\"author\":{\"name\":\"Famida\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#\\\/schema\\\/person\\\/8cc8d87d6cbc05e0ca8e6a1113a8b419\"},\"headline\":\"Deloitte Python Interview Questions 2027: Updated Preparation Guide\",\"datePublished\":\"2024-08-24T06:14:03+00:00\",\"dateModified\":\"2026-11-09T11:46:15+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/\"},\"wordCount\":4002,\"publisher\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/Deloitte-Python-Interview-Questions.png\",\"articleSection\":[\"Articles\",\"Coding\",\"Entri Skilling\",\"Python Programming\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/\",\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/\",\"name\":\"Deloitte Python Interview Questions 2027 (Updated)\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/Deloitte-Python-Interview-Questions.png\",\"datePublished\":\"2024-08-24T06:14:03+00:00\",\"dateModified\":\"2026-11-09T11:46:15+00:00\",\"description\":\"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#primaryimage\",\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/Deloitte-Python-Interview-Questions.png\",\"contentUrl\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/Deloitte-Python-Interview-Questions.png\",\"width\":820,\"height\":615,\"caption\":\"Deloitte Python Interview Questions\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/deloitte-python-interview-questions\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/entri.app\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Python Programming\",\"item\":\"https:\\\/\\\/entri.app\\\/blog\\\/category\\\/python-programming\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Deloitte Python Interview Questions 2027: Updated Preparation Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/\",\"name\":\"Entri Blog\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/entri.app\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#organization\",\"name\":\"Entri App\",\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/10\\\/Entri-Logo-1.png\",\"contentUrl\":\"https:\\\/\\\/entri.app\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/10\\\/Entri-Logo-1.png\",\"width\":989,\"height\":446,\"caption\":\"Entri App\"},\"image\":{\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/entri.me\\\/\",\"https:\\\/\\\/x.com\\\/entri_app\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/entri.app\\\/blog\\\/#\\\/schema\\\/person\\\/8cc8d87d6cbc05e0ca8e6a1113a8b419\",\"name\":\"Famida\",\"description\":\"Famida is an experienced educator with over a decade of teaching experience, specializing in grades 8 to 12, business management (BBM), and electronics engineering. Holding a Master's degree in Electronics and Communication Engineering, she has also trained interns in IoT. For the past four years, Famida has been writing articles for Entri, focusing on exam preparation tips, question papers, and study plans. She also creates practice questions for the Entri app and provides support to users. Additionally, Famida's writing skills extend to parenting and personal blogs, as well as curriculum development.\",\"sameAs\":[\"https:\\\/\\\/amuslimpreschoolershome.blogspot.com\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/famida-ahamad-4736a856\\\/\"],\"url\":\"https:\\\/\\\/entri.app\\\/blog\\\/author\\\/famida\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Deloitte Python Interview Questions 2027 (Updated)","description":"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/","og_locale":"en_US","og_type":"article","og_title":"Deloitte Python Interview Questions 2027 (Updated)","og_description":"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!","og_url":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/","og_site_name":"Entri Blog","article_publisher":"https:\/\/www.facebook.com\/entri.me\/","article_published_time":"2024-08-24T06:14:03+00:00","article_modified_time":"2026-11-09T11:46:15+00:00","og_image":[{"width":820,"height":615,"url":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png","type":"image\/png"}],"author":"Famida","twitter_card":"summary_large_image","twitter_creator":"@entri_app","twitter_site":"@entri_app","twitter_misc":{"Written by":"Famida","Est. reading time":"22 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#article","isPartOf":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/"},"author":{"name":"Famida","@id":"https:\/\/entri.app\/blog\/#\/schema\/person\/8cc8d87d6cbc05e0ca8e6a1113a8b419"},"headline":"Deloitte Python Interview Questions 2027: Updated Preparation Guide","datePublished":"2024-08-24T06:14:03+00:00","dateModified":"2026-11-09T11:46:15+00:00","mainEntityOfPage":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/"},"wordCount":4002,"publisher":{"@id":"https:\/\/entri.app\/blog\/#organization"},"image":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#primaryimage"},"thumbnailUrl":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png","articleSection":["Articles","Coding","Entri Skilling","Python Programming"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/","url":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/","name":"Deloitte Python Interview Questions 2027 (Updated)","isPartOf":{"@id":"https:\/\/entri.app\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#primaryimage"},"image":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#primaryimage"},"thumbnailUrl":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png","datePublished":"2024-08-24T06:14:03+00:00","dateModified":"2026-11-09T11:46:15+00:00","description":"Click here to access comprehensive Python Interview questions and answers for cracking the Deloitte Python interview!","breadcrumb":{"@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#primaryimage","url":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png","contentUrl":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2024\/08\/Deloitte-Python-Interview-Questions.png","width":820,"height":615,"caption":"Deloitte Python Interview Questions"},{"@type":"BreadcrumbList","@id":"https:\/\/entri.app\/blog\/deloitte-python-interview-questions\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/entri.app\/blog\/"},{"@type":"ListItem","position":2,"name":"Python Programming","item":"https:\/\/entri.app\/blog\/category\/python-programming\/"},{"@type":"ListItem","position":3,"name":"Deloitte Python Interview Questions 2027: Updated Preparation Guide"}]},{"@type":"WebSite","@id":"https:\/\/entri.app\/blog\/#website","url":"https:\/\/entri.app\/blog\/","name":"Entri Blog","description":"","publisher":{"@id":"https:\/\/entri.app\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/entri.app\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/entri.app\/blog\/#organization","name":"Entri App","url":"https:\/\/entri.app\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/entri.app\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2019\/10\/Entri-Logo-1.png","contentUrl":"https:\/\/entri.app\/blog\/wp-content\/uploads\/2019\/10\/Entri-Logo-1.png","width":989,"height":446,"caption":"Entri App"},"image":{"@id":"https:\/\/entri.app\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/entri.me\/","https:\/\/x.com\/entri_app"]},{"@type":"Person","@id":"https:\/\/entri.app\/blog\/#\/schema\/person\/8cc8d87d6cbc05e0ca8e6a1113a8b419","name":"Famida","description":"Famida is an experienced educator with over a decade of teaching experience, specializing in grades 8 to 12, business management (BBM), and electronics engineering. Holding a Master's degree in Electronics and Communication Engineering, she has also trained interns in IoT. For the past four years, Famida has been writing articles for Entri, focusing on exam preparation tips, question papers, and study plans. She also creates practice questions for the Entri app and provides support to users. Additionally, Famida's writing skills extend to parenting and personal blogs, as well as curriculum development.","sameAs":["https:\/\/amuslimpreschoolershome.blogspot.com\/","https:\/\/www.linkedin.com\/in\/famida-ahamad-4736a856\/"],"url":"https:\/\/entri.app\/blog\/author\/famida\/"}]}},"_links":{"self":[{"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/posts\/25591440","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/users\/42"}],"replies":[{"embeddable":true,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/comments?post=25591440"}],"version-history":[{"count":10,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/posts\/25591440\/revisions"}],"predecessor-version":[{"id":25665156,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/posts\/25591440\/revisions\/25665156"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/media\/25591441"}],"wp:attachment":[{"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/media?parent=25591440"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/categories?post=25591440"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/entri.app\/blog\/wp-json\/wp\/v2\/tags?post=25591440"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}