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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 added(self) -> int: """ Return the total number of added lines in the file. :return: int lines_added """

        added = 0
        for line in self.diff.replace('\r', '').split("\n"):
            if line.startswith('+') and not line.startswith('+++'):
                added += 1
        return added