type()

A = type("A", (object, ), dict(x="x"))
print A().x
print A.x
A.x = "class"

a = A()
print a.x
a.x = "instance"
print a.x
print A.x

## inheritance

B = type("B", (A, ), dict(y="y"))
print B.x, B.y

# >  x
# >  x
# >  class
# >  instance
# >  class
# >  class y

## classmethod, staticmethod, instance variable
def __init__(self):
    self.x = 10

top = type("top", (object, ), 
           {"static_fn" : staticmethod(lambda : "static top"), 
            "class_fn" : classmethod(lambda cls : "class top %s" % cls.x), 
            "x" : "x", 
            "__init__" : __init__, 
            "instance_fn" : lambda self : "instance %s" % self.x
            })

print top.static_fn(), top.class_fn()
print top().static_fn(), top().class_fn(), top().instance_fn()

# >  static top class top x
# >  static top class top x instance 10

まー、だから何？という話だけど。