In the modules, we can use a set of functions without required to redefine them. Then, from a group of related modules, we can create a package. Create a simple module:

def hi(name):
    print("Hello, " + name)

Save it as "module1" in your directory.

Use the module:

import module1
module1.hi("Ali")
# Hello, Ali

Built-in module

We can import various built-in modules in Python.

import platform
print(platform.system())
# Windows

Import module from a package:

import matplotlib.pyplot as plt

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