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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 _format_week(self, name, type, a_per):
 """Format an AnalysisPeriod into string for the EPW header."""

        return '{},{},{}/{},{}/{}'.format(name, type, a_per.st_month, a_per.st_day,
                                          a_per.end_month, a_per.end_day)