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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 _get_relative_pythonpath(self):

 """Return PYTHONPATH list as relative paths"""

        # Workaround to replace os.path.relpath (new in Python v2.6):
        offset = len(self.root_path)+len(os.pathsep)
        return [path[offset:] for path in self.pythonpath]