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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 _make_readline_peeker(self):
 """Make a readline-like function which peeks into the source."""

        counter = itertools.count(0)
        def readline():
            try:
                return self._peek_buffer(next(counter))
            except StopIteration:
                return ''
        return readline