BetterGen with "has_next" property

BetterGen

class BetterGen(object):
    """
    BetterGen
    """
    def __init__(self, gen):
        self.gen = gen
        self._next = None
        self._stoped = False
        self.try_next()

    def try_next(self):
        try:
            self._next = next(self.gen)
        except StopIteration:
            self._stoped = True

    def next(self):
        if self._stoped:
            raise StopIteration()
        else:
            value = self._next
            self.try_next()
            return value

    def __iter__(self):
        def iter_func():
            while self.has_next:
                yield self.next()
        return iter_func()

    @property
    def has_next(self):
        return not self._stoped


if __name__ == '__main__':
    g1 = BetterGen(iter("Hello world!"))
    print g1.has_next
    print ''.join(c for c in g1)
    g2 = BetterGen(iter(""))
    print g2.has_next

    # output:
    # >> True
    # >> Hello world!
    # >> False