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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 iter(self, start=0, end=None):
 """Iterate through successive history items. Parameters end : int Index of the last item to loop through + 1. start : int Initial index for the loop (0 by default). """

        if end is None:
            end = self._index + 1
        elif end == 0:
            raise StopIteration()
        if start >= end:
            raise StopIteration()
        # Check arguments.
        assert 0 <= end <= len(self._history)
        assert 0 <= start <= end - 1
        for i in range(start, end):
            yield self._history[i]