1 class parser:
2     def foo1(a):
3         return a
4
5     def foo2(a):
6         return foo1(a)

class Parser:
    @staticmethod
    def foo1(a):
           return a

    @staticmethod
    def foo2(a):
           return Parser.foo1(a)

class Parser:

    def __init__(self):
        pass

    def foo1(self, a):
           return a

    def foo2(self, a):
           return self.foo1(a)

parser = Parser()
print(parser.foo2('test'))