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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 adjust(self, ln):
 """Converts a parsing line number into an original line number."""

        adj_ln = ln
        need_unskipped = 0
        for i in self.skips:
            if i <= ln:
                need_unskipped += 1
            elif adj_ln + need_unskipped < i:
                break
            else:
                need_unskipped -= i - adj_ln - 1
                adj_ln = i
        return adj_ln + need_unskipped