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Specifically, I need to get at some objects and globals from the main module in an imported module. I know how to find those things when the parent module wants some particular thing from a child module, but I can't figure out how to go in the other direction.
492
Use vars() to convert your namespace to a dictionary, then use dict. get('your key') which will return your object if it exists, or a None when it doesn't.
To get access to local namespace dict you can call locals() or if you want to access any object's namespace call vars(objname) . Inside function if you call locals() or vars() you will get currently visible namespace as dictionary and should not be modified.
import <module_name> Thus, a module creates a separate namespace, as already noted.
In Python-speak, modules are a namespace—a place where names are created. And names that live in a module are called its attributes. Technically, modules correspond to files, and Python creates a module object to contain all the names defined in the file; but in simple terms, modules are just namespaces.
import __main__
But don't do this.
113
The answer you're looking for is:
import __main__
main_global1= __main__.global1
However, whenever a module module1 needs stuff from the __main__ module, then:
__main__ module should provide all necessary data as parameters to a module1 function/class,import module2 in both __main__ and module1.
38
I think this would work:
import sys
main_mod = sys.modules['__main__']
Not sure if it is a good practice but maybe you could pass the objects and variables you need as parameters to the methods or classes you call in the imported module.
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