iterables.py 文件源码

def __iter__(self):
        """ Return the inner iterator

            Example:

                >>> from ww import g
                >>> gen = g(range(10))
                >>> iter(gen) == gen.iterator
                True

            Returns:
                Inner iterator.

            Raises:
                RuntimeError: if trying call __iter__ after calling .tee()
        """
        if self._tee_called:
            raise RuntimeError("You can't iterate on a g object after g.tee "
                               "has been called on it.")
        return self.iterator

    # TODO: type self, and stuff that returns things depending on self