def __iter__(self):
        return iter(self.contents)
@return: the length of the stream (in bytes) if known, else -1
dataset/ETHPy150Open socketubs/pyhn/pyhn/lib/bs4_py3/element.py/Tag.__iter__--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/terminal/stream_variable.py/IStreamingEvent.getContentLength