Law of Demeter and Python

Question

Is there a tool to verify that Python code complies with the Demeter law?

I found a mention of Demeter in pychecker, but it seems that the tool understands this law different from what I expect: http://en.wikipedia.org/wiki/Law_of_Demeter

Wikipedia definition: Demeter's law for functions requires that the method M of an object O can only call methods of the following types of objects:

• O myself
• M parameters
• any objects created / created in M
• O direct component objects
• global variable available O in area M

Answer 1

, , , . , , . .

Answer 2

... M O :

• O - self. .
• M - , . , locals()
• , / M - . , locals()
• O - .. self.
• , O, M - , global , . globals().

Ummm.... , , ? - , , .

Python, ?

?

Answer 3

You may violate this law as follows:

class SomeClass:
    def someMethod(self):
        self.getSomeOtherClass().someOtherMethod() # this breaks the law
    def getSomeOtherClass(self):
        class_ = SomeOtherClass()
        return class_

Or not?