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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_unfolded_lines(self):
 """Iter input unfoled lines. Skip comments."""

        line = self._input_file.readline()
        while line:
            self.line_counter += 1
            self.byte_counter += len(line)

            line = self._strip_line_sep(line)

            nextline = self._input_file.readline()
            while nextline and nextline[:1] == b' ':
                line += self._strip_line_sep(nextline)[1:]
                nextline = self._input_file.readline()

            if not line.startswith(b'#'):
                yield line
            line = nextline