I've seen cases where the developer does the import of a module within a function, some cases mainly in the documentation of Django, why it was not very clear to me, if anyone can help me thank you.
I've seen cases where the developer does the import of a module within a function, some cases mainly in the documentation of Django, why it was not very clear to me, if anyone can help me thank you.
There are 2 reasons why the developer should do this:
Performance - The import will only happen when the function is called, and if it is never called, the interpreter will not need to load the module.
Retrocompatibility - Imported libraries may only be needed in specific environments (eg Windows vs Linux, Python 2 vs Python 3). The system can call the specified function for each environment and load the compatible libraries into it.