Here are very important interview questions on Python coding. if you going for a interview as a python developer then you have to read and understand these interview questions on python.
Python Coding Interview Questions
1. What is Python?
Python is a high-level, interpreted, and dynamically typed programming language known for its readability and simple syntax. It’s widely used in web development, data analysis, AI, and scripting.
2. What are the key features of Python?
- Easy to learn and use
- Interpreted and dynamically typed
- Object-oriented and supports functional programming
- Large standard library
- Huge community support
3. What are Python’s data types?
- Numbers (int, float, complex)
- Strings (str)
- Booleans (bool)
- Lists, Tuples, Sets, Dictionaries
4. What is the difference between a list and a tuple?
- List: Mutable, declared with square brackets []
- Tuple: Immutable, declared with parentheses ()
5. What is a dictionary in Python?
A dictionary is an unordered collection of key-value pairs.
Example:
person = {“name”: “Alice”, “age”: 25}
6. What is the difference between is and == in Python?
- == checks value equality
- is checks reference equality (same memory location)
7. What is a function in Python?
A function is a reusable block of code. It is defined using def.
Example:
def greet(name): return “Hello ” + name
8. What is the difference between append() and extend() in lists?
- append() adds an element as a single item
- extend() adds all elements of another iterable
Example:
a = [1, 2] a.append([3, 4]) # [1, 2, [3, 4]] a.extend([3, 4]) # [1, 2, 3, 4]
9. What are *args and **kwargs?
- *args: Passes a variable number of positional arguments
- **kwargs: Passes a variable number of keyword arguments
Example :
def demo(*args, **kwargs): print(args) print(kwargs)
10. What is list comprehension in Python?
A concise way to create lists.
Example:
squares = [x**2 for x in range(5)] # [0, 1, 4, 9, 16]
