[Tutor] Re: import.... (Joseph Q.)

Kent Johnson kent37 at tds.net
Sun Apr 10 20:13:14 CEST 2005

Joseph Quigley wrote:
  > Well, I'm importing a custom module, and I can't loop back to the module
> I imported (the modules are different modes of the program. Someone 
> suggested classes, but I have no idea how to use them.

I'm not sure I understand you, but it sounds like you have two versions of a module and you would 
like to alternate between them? You could do something like this:

import mymodule_initial as mymodule

mymodule.dosomething()  # calls mymodule_initial .dosomething()

# switch to the other version of mymodule
import mymodule_alternate as mymodule

mymodule.dosomething()  # calls mymodule_alternate.dosomething()

A couple of notes:
- If the import is in a function, declare mymodule as global (I'm not sure this will work, actually; 
try it and see)
- I would always use qualified names to access mymodule, e.g. mymodule.dosomething(). Don't use
from mymodule_initial import dosomething
there's too much chance for confusion.

You could use a class to do this too but I'm not sure there is an advantage; the module and the 
class are both serving as namespaces.


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