human
Here's a good function header given the following:
I wrote the below code

    def getit(self):
        try:
            return self._assumptions[fact]
        except KeyError:
            if (self._assumptions is self.default_assumptions):
                self._assumptions = self.default_assumptions.copy()
            return _ask(fact, self)
    getit.func_name = as_property(fact)
    return property(getit)

What's a good function header?
assistant
#Here's a good function header.

def make_property(fact):