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Kelvin Wangonya
Kelvin Wangonya

Posted on • Originally published at wangonya.com

Difference between a python module and a package

Modules

Modules are single Python files that can be imported. Any python file can be a module. For example, if I have two Python files: module.py and hello.py in the same directory:

# module.py

def hello(name):
    print("Hello {}".format(name))
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I can import that module in my hello.py:

#hello.py

import module

module.hello("World!") # Hello World!
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The same can be done in the interpreter:

>>> from module import hello
>>> hello("World!") # Hello World!
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Packages

Packages are made up of multiple Python files (or modules), and can even include libraries written in different languages like C or C++. Seeing an __init.py__ file in a folder typically tells you that that folder is a Python package. The __init__.py doesn't have to contain any code -- sometimes it does -- it just has to be there for Python take that particular folder as a package.

📁 my_package
    |- __init__.py
    |- module.py
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# __init.py__

from my_package.module import hello
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When you import my_package in your script, the __init__.py script will be run, giving you access to all of the functions in the package. In this case, it only gives access to the module.hello function.

Top comments (2)

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ethancampbell92 profile image
ethancampbell92

This was a solid difference maker between the two. Appreciate your time putting this article up Kinyanjui.
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London, United Kingdom

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Kelvin Wangonya Author

Glad it helped!

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