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Python Interview Series Day 2

By September 16, 2025Blog

 

🚀 Day 2: Ace Your Python Interview with These 20 Must-Know Questions!

Welcome back to Day 2 of SQL School’s exclusive 15-Day Python Interview Series!

Yesterday, we built a solid foundation. Today, we’re stepping up the intensity with a rapid-fire Q&A session covering 20 of the most common questions you’ll face in a Python interview. Let’s sharpen your skills and get you one step closer to your dream job!

📺 Watch Day 2: 20 Questions, 20 Answers – Your Interview Cheat Sheet!

This video is packed with concise answers and ready-to-use code snippets. It’s the perfect way to test your knowledge and fill in any gaps.

Don’t miss a single day! Make sure to Subscribe to the SQL School YouTube Channel for the full, immersive 15-Day Interview Prep series. Hit that notification bell! 🔔

What’s On Deck for Day 2? From Fundamentals to Advanced Concepts

Today, we cover a broad spectrum of topics that interviewers love to ask about. Here’s a breakdown of what you’ll master.

🐍 Python Core Concepts

  • How Python is Interpreted: Learn how Python code is executed line by line via bytecode and the Python Virtual Machine (PVM).
  • Memory Management: Understand Python’s automatic garbage collection system.
  • Higher-Order Functions: Grasp the concept of functions that take other functions as arguments or return them.
  • Multiple Inheritance: Learn how a class can inherit from more than one parent class.
  • List Comprehension: Discover the concise, readable way to create lists in Python.

✍️ String Manipulation Challenges

  • Concatenate Two Strings: result = "Hello" + " " + "World"
  • Convert a String to an Integer: int_num = int("12345")
  • Check for a Palindrome: A classic! s == s[::-1]

🔢 Numerical Operations & Logic

  • Even or Odd Check: The essential num % 2 == 0 logic.
  • Maximum of Three Numbers: Using the built-in max() function for efficiency.
  • Calculate a Factorial: A great example of recursion.
  • Area of a Rectangle: A simple length * width calculation.
  • Celsius to Fahrenheit Conversion: A practical list comprehension example.
  • Find the GCD: Implementing the Euclidean algorithm.

📊 List Operations

  • Find Max/Min in a List: Looping through elements to find the highest or lowest value.
  • Find the Middle Element: Using list length and indexing: my_list[int(len(my_list)/2)]

💡 Hands-On Challenge: Palindrome Checker

It’s time to apply what you’ve learned. The palindrome is a favorite interview question because it tests your understanding of string manipulation and slicing.

Write a Python function that checks if a given string is a palindrome (reads the same forwards and backward).

Click for a Hint! (Try it yourself first!)

Python’s slicing feature is incredibly powerful. How can you reverse a string in a single, clean step using slicing?

Need the Solution? (Only after trying!)

def is_palindrome(s):
  # Clean the string: remove spaces and convert to lowercase
  s_cleaned = ''.join(filter(str.isalnum, s)).lower()
  # Check if the cleaned string is equal to its reverse
  return s_cleaned == s_cleaned[::-1]

# --- Test Cases ---
print(f"'radar' is a palindrome: {is_palindrome('radar')}")     # Expected: True
print(f"'A man a plan a canal Panama' is a palindrome: {is_palindrome('A man a plan a canal Panama')}") # Expected: True
print(f"'hello' is a palindrome: {is_palindrome('hello')}")     # Expected: False

🌟 Why Day 2 is a Major Leap Forward

Mastering these 20 questions will dramatically boost your confidence. Interviewers ask these not just to see if you know the answer, but to gauge your:

  • Problem-Solving Approach: How you break down a problem.
  • Code Fluency: Your ability to write clean, efficient Python.
  • Core Knowledge: Your understanding of fundamental computer science concepts.

This knowledge is critical for roles like:

  • Python Data Analyst
  • Python Programmer
  • Python AI/ML Engineer
  • Python Full Stack Developer
  • Azure Data Engineer

✅ Your Action Plan for Today – Level Up Your Skills!

  1. Watch the Day 2 Video: Pause and try to answer each question before the video does.
  2. Code the “Palindrome Checker”: Don’t just copy the solution; type it, run it, and understand every line.
  3. Review Yesterday’s Notes: See how the concepts from Day 1 apply to today’s questions.
  4. Join Our Community: Share your code, ask questions, and grow with fellow learners!

🎯 Day 2 Snapshot: Your Quick Reference

Day 2 Focus AreaWhy It Matters for InterviewsYour Immediate Action Step
20 Q&A Rapid-FirePrepares you for common, real-world questionsWatch the video and self-quiz your knowledge
Core & Advanced ConceptsShows depth and breadth of your Python skillsReview concepts like list comprehension & inheritance
Hands-On ChallengeProves you can apply theory to codeSolve and understand the Palindrome problem

✨ Final Thoughts: Building Momentum!

Day 2 was intense, but you made it! The momentum you’re building is the key to success. Keep practicing, stay curious, and remember that every line of code you write is a step toward acing that interview.

Ready for Day 3? Make sure you’ve subscribed to our YouTube Channel and are active in the SQL School community. Let’s do this!

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