global variables, classes, imports

[Skaperen]

i set up a module with a class.   outside the class i import a module and define a variable.  in a method of the class in can use that module or object that was imported but not that variable that was assigned a value.  ok, i understand there are no globals in classes.  but then, how do the modules work in this situation?  what if i do from module_name import * and assign a variable in that module?