Python methods and functools

test.py

# This doesn't work (self isn't passed when calling obj.bar or obj.baz

class MyClass(object):
    def foo(self, foo=None):
        # do something with foo
    
    bar = functools.partial(foo="bar")
    baz = functools.partial(foo="baz")

# This works

class MyClass(object):
    def __init__(self):
        self.bar = functools.partial(foo="bar")
        self.baz = functools.partial(foo="baz")

    def foo(self, foo=None):
        # do something with foo