Interview Questions

Top 5 Python Interview Questions

Learning Outcome

5

Compare and apply append() and extend() methods.

4

Create efficient lists using List Comprehension.

3

Explain and use break, continue, and pass in loop control.

2

Understand the difference between == and is operators.

1

Differentiate between List, Tuple, Set, and Dictionary in Python.

Question 1

List vs Tuple vs Set vs Dictionary

Question 2

== Operator vs is Operator

==  Compares Values

Checks if two variables hold the same value. 5 == 5 returns True even if they're stored in different memory locations.

is Compares Identity

Checks if two variables point to the exact same object in memory. Primarily used for None checks: if x is None

💡 Pro Tip: Always use is None instead of == None. It's safer and more Pythonic.

Question 3

Break vs Continue vs Pass

           ⏭ Continue

  • Jumps to next loop cycle
  • Loop continues running
  • Used when some values should be ignored

 

              ⚪ Pass

  • Used when a statement is required
  • Executes no action
  •  Helps avoid syntax error in empty block

 

  • Immediately exits the loop
  • No further iterations run
  • Used when condition is satisfied and loop should stop

🛑 Break

Question 4

List Comprehension

  • A smarter, shorter way to build lists
  • Instead of writing a full for loop, list comprehension lets you create a new list in a single, readable line.
  • Classic example — squaring numbers 0 through 4:

[i*i for i in range(5)]

# Output: [0, 1, 4, 9, 16]

 

  • You can also add conditions. Example — only even squares:

[i*i for i in range(10) if i % 2 == 0]

 

 

Question 5

append() vs extend()

You've Got This!

 

You're now equipped with five core Python concepts that interviewers love to test. Review these, practice with real code, and walk into your interview with confidence.