class Foo:
    pass

class Bar(Foo):
    def __init__(self):
        super().__init__()

class SuperMystery:
    def nothing_special(self):
        print('__class__' in locals())  # False 

    def surprise(self):
        super  # senseless expression, do nothing  
        print('__class__' in locals())  # True 

    @staticmethod
    def even_more():  # Just as function, no reference to an instance/class
        super  # Just a word, senseless expression , do nothing
        print('__class__' in locals())  # True 
        
super_mystery = SuperMystery()
super_mystery.nothing_special()
super_mystery.surprise()
super_mystery.even_more()