class Foo():
    a = None
    b = 42
    c = "string"
    l = []
    def test(self):
        return (self.a,self.b,self.c,self.l)

class Bar(Foo):
    c = 96

let f = Foo()
let b = Foo()
def testAll():
    print(Foo.test(Foo), f.test(), b.test(), Bar.test(Bar))

testAll()
f.a = 42
testAll()
f.l.append("hi")
testAll()
f.l = []
testAll()
f.l.append("bacon")
testAll()
b.b = "derp"
testAll()