Adding classes to modules at runtime from outside that module

Andrew Warkentin andreww at
Fri Apr 11 02:05:20 CEST 2008

frambooz at wrote:

>  In Python, is it possible to add classes to a module at run-time?
>  Say I have a module foo and a module bar. Foo has class A and B, and
>bar has class C. I want to add class C to foo so I can access it as
>foo.C, but i want to do it without modifying foo's source.
>  Is this at all possible?

You would do something like

import foo
import bar

foo.C = bar.C

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