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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.
Interview Questions - Python
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