In Python, 'class' is also object

dynamic_class.py

"""
    referenced from https://stackoverflow.com/questions/100003/what-are-metaclasses-in-python/6581949#6581949
"""

"""
    1.
"""
def choose_class(name):
    if name == 'foo':
        class Foo(object):
            pass
        return Foo
    else:
        class Bar(object):
            pass
        return Bar

MyClass = choose_class('foo')
print(MyClass) # >>> <class '__main__.Foo'>
print(MyClass()) # >>> <__main__.Foo object at 0x89c6d4c>


"""
    2.
"""
Foo = type('Foo', (), {'aa':True}) # return Class Object
# this is same as...
class MyShinyClass(object):
    bar = True
    pass

def choose_class_2(name):
    if name == 'foo':
        Foo = type('Foo', (), {'aa':True}) # return Class Object
        return Foo
    else:
        Bar = type('Bar', (), {'bar':True}) # return Class Object
        return Bar

MyShinyClass = choose_class_2('foo')
print(MyShinyClass) # >>> <class '__main__.MyShinyClass'>
print(MyShinyClass()) # >>> <__main__.MyShinyClass object at 0x8997cec>

"""
type(name of the class, 
     tuple of the parent class (for inheritance, can be empty), 
     dictionary containing attributes names and values)
"""