Cave of Python

Individual Python module files can be placed in directories, or even entire hierarchies of directories. This means you can put multiple module files in a directory, forming a package.

While directories are separated by a / character (or \ on Windows) when referring to them in a terminal, when you import modules in Python, the slashes become dots.

mystuff/mymodule.py

def greet():
    print("Hello")

def main():
    greet()

if __name__ == "__main__":
    main()

myprog.py

import mystuff.mymodule as mm

mm.greet()

output:

Hello