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Most Asked Python Questions

The document outlines commonly asked Python interview questions across various levels, including basic, intermediate, and advanced topics. Key features of Python, data types, memory management, object-oriented programming principles, exception handling, file handling, and common coding challenges are discussed. It serves as a comprehensive guide for preparing for Python-related interviews.

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Aditya Katkhede
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7 views3 pages

Most Asked Python Questions

The document outlines commonly asked Python interview questions across various levels, including basic, intermediate, and advanced topics. Key features of Python, data types, memory management, object-oriented programming principles, exception handling, file handling, and common coding challenges are discussed. It serves as a comprehensive guide for preparing for Python-related interviews.

Uploaded by

Aditya Katkhede
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Most Asked Python Questions

Basic Python Interview Questions

1. What are Pythons key features?

- Interpreted, high-level, dynamically typed, object-oriented, open-source, portable, supports multiple

paradigms.

2. Difference between list, tuple, set, and dict:

| Type | Ordered | Mutable | Duplicates | Syntax |

|-------|---------|---------|------------|--------|

| list | Yes | Yes | Yes | [] |

| tuple | Yes | No | Yes | () |

| set | No | Yes | No | {} |

| dict | Yes | Yes | Keys: No | {} |

3. Difference between 'is' and '==':

- 'is': checks identity

- '==': checks equality

4. Data types: int, float, str, bool, list, tuple, set, dict, NoneType

5. Memory management:

- Uses reference counting and garbage collection.

Intermediate-Level Questions

1. List comprehension: [x**2 for x in range(5)]

2. Lambda: lambda x: x + 2

3. *args and **kwargs:

def func(*args, **kwargs): pass

4. pass: placeholder
continue: skip to next iteration

break: exit loop

5. copy.copy(): shallow

copy.deepcopy(): deep

OOP in Python

1. Pillars: Inheritance, Encapsulation, Polymorphism, Abstraction

2. Inheritance:

class A: pass

class B(A): pass

3. __init__ is constructor; self is instance

4. Class vs Static methods:

@classmethod def cls_method(cls): pass

@staticmethod def static_method(): pass

5. Method overriding: redefine in child class

Exception Handling

1. try/except/finally

2. Common exceptions: ValueError, TypeError, KeyError, IndexError, ZeroDivisionError

File Handling

1. Reading:

with open('file.txt', 'r') as f: f.read()

2. read(): full file

readline(): one line

readlines(): list of lines


Advanced Topics

1. Decorator example:

def decorator(func):

def wrapper():

print("Before"); func(); print("After")

return wrapper

2. Generator:

def gen(): yield 1; yield 2

3. Iterator vs Iterable:

- Iterable: list, tuple

- Iterator: has __next__()

4. GIL: prevents multiple threads executing Python bytecodes in CPython

5. Multithreading (I/O) vs Multiprocessing (CPU)

Common Coding Questions

1. Reverse string

2. Find duplicates in list

3. Fibonacci

4. Palindrome check

5. Count occurrences

6. Sort list of tuples

7. Merge dictionaries

8. Flatten nested list

9. Find missing number

10. Use of map, filter, reduce

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