Python

Question 1

What are the different data types in Python?

Answer 1

Python has several built-in data types including int, float, str, list, tuple, dict, set, and bool

Question 2

How do you create a list, tuple, or dictionary in Python?

Answer 2

List: my_list = [1, 2, 3]
Tuple: my_tuple = (1, 2, 3)
Dictionary: my_dict = {‘key1’: ‘value1’, ‘key2’: ‘value2’}

Question 3

What is the difference between mutable and immutable data types?

Answer 3

Mutable: Can be changed after creation (e.g., list, dict, set).
Immutable: Cannot be changed after creation (e.g., int, float, str, tuple).

Question 4

What types of loops are there?

Answer 4

For loops & while loops

Question 5

How do you handle conditional statements?

Answer 5

Use if, elif, and else to execute code based on conditions.

Question 6

How do you define a function in Python?

Answer 6

Use the def keyword:

def my_function(parameters):
# Function body
return result

Question 7

What is the difference between a function and a method?

Answer 7

Function: A block of reusable code defined using def.
Method: A function that is associated with an object (called using object.method()).

Question 8

How do you import a module in Python?

Answer 8

Use import module_name or from module_name import specific_function.

Question 9

How do you handle exceptions in Python?

Answer 9

Use try and except blocks:

Question 10

Can you give an example of a try-except block?

Answer 10

try:
result = 10 / 0
except ZeroDivisionError:
print(“Cannot divide by zero!”)

Question 11

How do you read from and write to a file in Python?

Answer 11

Use the open() function with modes r (read) or w (write):

with open(‘file.txt’, ‘r’) as file:
contents = file.read()

Question 12

What are some common methods for handling file operations?

Answer 12

read(), readline(), write(), and close().

Question 13

How do you use a third-party library in your script?

Answer 13

Install with pip install library_name and import with import library_name.

Question 14

What tools or environments do you use for developing Python scripts?

Answer 14

Common tools include IDEs like PyCharm, VS Code, and Jupyter Notebook.

Question 15

What is a class in Python, and how do you create one?

Answer 15

A class is a blueprint for creating objects, defined using the class keyword:

class MyClass:
def __init__(self, attribute):
self.attribute = attribute

Question 16

Explain inheritance and how it is implemented in Python.

Answer 16

Inheritance allows a class to inherit attributes and methods from another class. Implemented using class declaration:
class ParentClass:
# Parent methods and attributes

class ChildClass(ParentClass):
# Inherits from ParentClass

Question 17

Write a script to read a CSV file and print its contents.

Answer 17

with open(‘file.csv’, newline=’’) as csvfile:
reader = csv.reader(csvfile)
for row in reader:
print(row)

Question 18

Create a function that takes a list of numbers and returns the average.

Answer 18

def calculate_average(numbers):
return sum(numbers) / len(numbers) if numbers else 0

Question 19

Write a Python script that fetches data from an API and processes it.

Answer 19

import requests

response = requests.get(‘https://api.example.com/data’)
if response.status_code == 200:
data = response.json()
# Process data