Question 1

What are Python's key features?

Accepted Answer

Python is dynamically typed, interpreted, object-oriented, and supports high-level data structures and libraries for rapid development.

Question 2

Explain the concept of classes and objects in Python.

Accepted Answer

A class is a blueprint, and an object is an instance of a class. Python supports inheritance, encapsulation, and polymorphism via its OOP model.

Question 3

What are Python decorators and how do they work?

Accepted Answer

Decorators are higher-order functions that modify the behavior of another function or method without permanently modifying it.

Question 4

How is memory managed in Python?

Accepted Answer

Python uses reference counting and a cyclic garbage collector to reclaim unused memory. The `gc` module helps control garbage collection.

Question 5

How would you automate file renaming in a folder using Python?

Accepted Answer

You can use the `os` module to list, iterate, and rename files within a directory.

Question 6

What are mutable and immutable types in Python?

Accepted Answer

Mutable types can be changed after creation (list, dict, set). Immutable types cannot (int, float, str, tuple).

Question 7

Explain list comprehension with an example.

Accepted Answer

List comprehension provides a concise way to create lists. It consists of brackets containing an expression followed by a for clause.

Question 8

What is the difference between `deepcopy` and `shallow copy`?

Accepted Answer

Shallow copy creates a new object but inserts references to the original nested objects. Deep copy recursively copies all nested objects.

Question 9

What are Python generators and how do they differ from iterators?

Accepted Answer

Generators are functions that yield values using `yield`, producing an iterator. They are memory-efficient for large sequences.

Question 10

What is method resolution order (MRO) in Python?

Accepted Answer

MRO defines the order in which base classes are searched for a method. It follows C3 linearization, accessible via `ClassName.__mro__`.

Python Interview Questions & Answers

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