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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 command_help(self, *args, **kwargs):
 """Displays this help menu."""

        print("Commands available:\n")
        for name in dir(self):
            if not name.startswith("command_"):
                continue
            name_clean = name[len("command_"):]
            print("%s:\n - %s\n" % (name_clean, getattr(self, name).__doc__.strip()))