How do you get all classes defined in a module but not imported?

Question

I've already seen the following question but it doesn't quite get me where I want: How can I get a list of all classes within current module in Python?

In particular, I do not want classes that are imported, e.g. if I had the following module:

from my.namespace import MyBaseClass from somewhere.else import SomeOtherClass  class NewClass(MyBaseClass):     pass  class AnotherClass(MyBaseClass):     pass  class YetAnotherClass(MyBaseClass):     pass 

If I use clsmembers = inspect.getmembers(sys.modules[__name__], inspect.isclass) like the accepted answer in the linked question suggests, it would return MyBaseClass and SomeOtherClass in addition to the 3 defined in this module.

How can I get only NewClass, AnotherClass and YetAnotherClass?

Answer 1

Inspect the __module__ attribute of the class to find out which module it was defined in.

Answer 2

I apologize for answering such an old question, but I didn't feel comfortable using the inspect module for this solution. I read somewhere that is wasn't safe to use in production.

Initialize all the classes in a module into nameless objects in a list

See Antonis Christofides comment to answer 1.

I got the answer for testing if an object is a class from How to check whether a variable is a class or not?

So this is my inspect-free solution

def classesinmodule(module):     md = module.__dict__     return [         md[c] for c in md if (             isinstance(md[c], type) and md[c].__module__ == module.__name__         )     ]  classesinmodule(modulename)