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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def disconnect(self, slot):
 """ Disconnects the slot from the signal """

        if not callable(slot):
            return

        if inspect.ismethod(slot):
            # If it's a method, then find it by its instance
            slotSelf = slot.__self__
            for s in self._slots:
                if isinstance(s, weakref.WeakKeyDictionary) and (slotSelf in s) and (s[slotSelf] is slot.__func__):
                    self._slots.remove(s)
                    break
        elif isinstance(slot, partial) or '<' in slot.__name__:
            # If it's a partial or lambda, try to remove directly
            try:
                self._slots.remove(slot)
            except ValueError:
                pass
        else:
            # It's probably a function, so try to remove by weakref
            try:
                self._slots.remove(weakref.ref(slot))
            except ValueError:
                pass