Question

I have a Python 2.x module.py file that looks like this:

class A(object):
    KEYWORD = 'Class A'

class B(A):
    KEYWORD = 'Class B'

class C(object):
    pass

def list_class_keywords():
    for name in globals():
        print name, hasattr(name, 'KEYWORD')

if __name__ == '__main__':
    list_class_keywords()

In list_class_keywords(), I’m looping through all of the objects of this file module and testing if the object has an attribute KEYWORD. Clearly it isn’t working, since name is a string. How should I rewrite list_classes to get what I’m looking for?

---

Update: thanks to Ignacio for the hint. Here is the updated code:

def list_class_keywords():
    global_dict = globals()
    for name in global_dict:
        obj = global_dict[name]
        print name, hasattr(obj, 'KEYWORD')

Answer 1

class A(object):
    KEYWORD = 'Class A'

class B(A):
    KEYWORD = 'Class B'

class C(object):
    pass

def list_class_keywords():
    for name, obj in globals().items():
        print name, hasattr(obj, 'KEYWORD')

if __name__ == '__main__':
    list_class_keywords()