Key Python Built-in Modules

In programming, a library is a collection of pre-written code that offers reusable functionalities.

A library is composed of various modules, which can work together to perform specific tasks.

Python includes standard libraries such as math and datetime, and the built-in modules within these libraries are provided with Python's installation.

These built-in modules can be used instantly without any additional installation process.

1. math

   • Provides functions for mathematical operations.

   • Examples: math.sqrt(), math.pi, math.sin()

2. datetime

   • Handles dates and times.

   • Examples: datetime.datetime.now(), datetime.timedelta()

3. os

   • Interacts with the operating system and handles the file system.

   • Examples: os.listdir(), os.path.join()

4. sys

   • Interacts with the Python interpreter (a program that executes code).

   • Examples: sys.argv, sys.exit()

5. random

   • Provides functions for generating random numbers.

   • Examples: random.randint(), random.choice()

6. json

   • Parses and generates JSON data.

   • Examples: json.loads(), json.dumps()

7. re

   • Handles strings using regular expressions.

   • Examples: re.match(), re.search()

8. urllib

   • Used for handling URLs and sending HTTP requests.

   • Example: urllib.request.urlopen()

Copy
import math

# Calculate the area of a circle
radius = 5
area = math.pi * math.pow(radius, 2)

print(f"Area of the circle: {area}")

Click the Run Code button on the right side of the screen to see the result or modify the code!