如何初始化python模块？

Question

I have a python module ('my_module.py') and in it two functions 'A' and 'B'.

They both require a 3rd module (say pandas).

Is there a way to load pandas as part of the module so it'll be accessible to both functions? (trying to avoid importing pandas per function call...)

Or do I have to convert this into a package and load pandas as part of the init ? (trying to avoid that since I don't want an extra directory...)

Answer 1

Just import pandas at the start of the module.

It will be imported (and initialized) when my_module.py is imported or run, and it will be available for both functions. If several modules use pandas , import it at the start of each one - it will be imported only once per interpreter session.

Mockup example of mymodule.py :

import pandas

def A(foo):
    return pandas.do_something(foo)

def B(bar):
    return pandas.do_something_else(bar)

Answer 2

Use import pandas in your module my_module.py .

Inside your my_module.py

def A(sth):
    return pandas.module(sth)

And similarly for B