python namespace: __main__.Class not isinstance of package.Class

Question

Consider you have two python files as defined below. Say one is a general package (class2), and the other one does specific overrides and serves as the executab

Answer 1

Thanks for the hints, which finally helped me to experiment in the right direction. The solution I just found in this toy model, is to fix the namespace issue using an import. In order to rule out the issue user4815162342 pointed out, I added another class to class1. The following code for class1.py appears to do, what I want:

#!/usr/bin/python
class Test(object):
    pass

class Toast(object):
    pass

class Verificator():
    def check(self, myObject):
        if not isinstance( myObject, Test ):
            print "NOPE: %s is no instance of %s" % (type(myObject),Test)
        else:
            print "OK: %s is instance of %s" % (type(myObject),Test)

if __name__ == '__main__':
    from class2 import getTest
    from class1 import Test, Toast

    v = Verificator()
    t = Test()
    v.check(t)
    t = getTest()
    v.check(t)
    t = Toast()
    v.check(t)