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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_arg_name(self, param):
 """ gets the argument name used in the command table for a parameter """

        if self.current_command in self.cmdtab:
            for arg in self.cmdtab[self.current_command].arguments:

                for name in self.cmdtab[self.current_command].arguments[arg].options_list:
                    if name == param:
                        return arg
        return None