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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 update_lists(self):
 """Update packages list and ChangeLog.txt file after upgrade distribution """

        print("{0}Update the package lists ?{1}".format(
            self.meta.color["GREEN"], self.meta.color["ENDC"]))
        print("=" * 79)
        if self.msg.answer() in ["y", "Y"]:
            Update().repository(["slack"])