Python Modules

In any language, if the program is getting bigger, you may have to split it into more files for easier maintenance. You may also want to use a function defined in a file without copying the entire logic in each file. To support this, Python has a way to put the definitions in a file and use them in a script wherever required to use those functions you have defined in that file. Such file is called as a module in Python. It always ends with .py extension.

You can call a function / definition defined in a module file using import statement in a script. For instance, I am defining a calc module with some definitions.

File: calc.py

#calc.py

def add_up(*args)

  x = 0

    for arg in args:

x = x + arg;

printf(f"Amount added up to {x}")

Now, this module calc can be imported into any script using import keyword. Here, the additions.py script is using calc module using import statement and calling a definition add_up without repetition of add_up login in additions.py file.

#additions.py

import calc

add_up(10,20,30)