Python module imports run code!

Published: 13 February 2023
on channel: Python Morsels
1,381
30

When Python imports a module, it runs all the code in that module.
So if your Python file is meant to be imported as a module, be careful not to put side effects at the top-level of your `.py` file.

Read an article version of this video at https://pym.dev/importing-module-runs...

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00:00 A module that defines and prints things
00:23 What happens when you import a module?
01:45 Avoiding import side effects
02:32 When are import side effects acceptable?
03:01 Python runs code when you import a module


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