Dynamic return ?

[JohnnyCoffee]

Another possibility would be utilizing dicts to register the objects and have a lookup() method. Something like this:

class Test:
	def a(self):
		return 5

	def b(self):
		return 10

	def lookup(self, meth):
		return {"a": self.a, "b": self.b}.get(meth, self.a)

x = Test()
x.lookup("b")()

In addition to this, you would need another dict to store instances and look them up.

getattr()