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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 cmd_long(self, args):
        '''execute supplied command long'''
        if len(args) < 1:
            print("Usage: long <command> [arg1] [arg2]...")
            return
        command = None
        if args[0].isdigit():
            command = int(args[0])
        else:
            try:
                command = eval("mavutil.mavlink." + args[0])
            except AttributeError as e:
                try:
                    command = eval("mavutil.mavlink.MAV_CMD_" + args[0])
                except AttributeError as e:
                    pass

        if command is None:
            print("Unknown command long ({0})".format(args[0]))
            return

        floating_args = [ float(x) for x in args[1:] ]
        while len(floating_args) < 7:
            floating_args.append(float(0))
        self.master.mav.command_long_send(self.settings.target_system,
                                          self.settings.target_component,
                                          command,
                                          0,
                                          *floating_args)