[Tutor] How do you make a module

[Sean 'Shaleh' Perry]

> 
> Thanks.  I didn't realize that even the program calling other modules was in
> fact a module itself.
> 

when used as a module the value of __name__ is the name of the module file,
when ran by the interpreter it is '__main__'.  This is why you see code like
this:

foo.py:

def foo():
  do stuff

if __name__ == '__main__':
  # test foo out
#end

if I then do:

import foo

foo.foo() it is happy.  If I do python foo.py it will run the tests.