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Programming in Python

Importing a Module

Explore how to import modules in Python to reuse code across programs. Understand different import methods, renaming modules, the module search sequence, and managing code behavior when running as a script or imported module.

We'll cover the following...

To use the definitions and statements of one module in another module, we need to import the first module into the second one, as shown below:

Python 3.8
import functions
functions.display( )
functions.show( )

When we execute main.py, it runs as a module with the name __main__.

The import functions statement makes the definitions in functions.py available in main.py.

A module can import multiple modules, as shown below:

Python 3.8
import math
import random
a = 100
b = 200
print(__name__)
print(math.sin(0.5))
print(math.cos(0.5))
print(random.random( ))
print(random.randint(30, 45))

In the code above, __name__ contains __main__. This indicates that we are executing the main ...