What are Python 3 modules and how do I use them?

What are Python 3 modules and how do I use them?

Python 3 modules are files containing Python code that can define functions, classes, and variables. You can use them to organize your code and reuse functionality.

How do I create my own module?

To create your own module, simply create a new Python file with a .py extension and define your functions or classes in it.

Can you give me an example of using a module?

Sure! If you create a file named mymodule.py with a function def greet(): print('Hello!'), you can use it in another file by importing it using import mymodule.

What are some built-in modules I should know about?

Some useful built-in modules include math for mathematical functions, datetime for date and time manipulation, and os for operating system interactions.