Possible import overhead

[Hannnsen]

Python documentation mentions overhead produced by importing functions from modules like the following example shows:

def some_function():
    from scipy import something, something_else
    some_var = something(100)
    return something_else(some_var)


def analysis():
    for i in range(0, 1000):
        some_function()

I would consider to place every import at the top of the files. I'll try this out, if the package version works, it's even possible to put it into the __init__.py from the module, so you needed modules/packages get imported automatically and only once at a central point.