Loading Modules

[Cornelius Kölbel]

Hello list,

I am wondering about loading modules.What is a good way of doing this?

In my code I got one single function, where I need some functionality
from a built-in module.

Is it a better way to load the module only within the function
  pro: the function will only be hit every now and then or only with a
probability of 90%.
         So in 90% cases the modules will not be loaded. (preserve
resources)

What is the balance between speed, resources and code style?

Is there a pythonian way for deciding in which case to do what?

Kind regards
Cornelius

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