Could somebody please explain what is happening ....

[John Dean]

Hi

I have been reading quite a lot of Python source code recently and I have
come across a particular construct which I don't understand. I would be
grateful if somebody could explain the reason for including the following
lines of code. I have seen it only at the beginning of a module:-

global sys
import sys

global os
import os

....
....

I know what global means and I know what import means but what is the reason
for making an imported module global?

-- 
Best Regards
John