Using python write the code

1 class InvalidCommand (Exception): paBs Raising an Exception def validate_input (string): If string is a valid comand, return its name and arguments If string is not a valid command, raise Invalidcommand In the previous problem, you used a trylexcept statement to catch an exception. This problem deals with the opposite situation: raising an exception in the first place 10 Valid commandst add x y sub x y mul x y div x y One common situation in which you will want to raise an exception is where you need to indicate that some precondition that your code relies upon has not been met. (You may also see the assert statement used for this purpose, but we won't cover that here.) 12 13 14 15 16 17 18 19 20 21 Parameters: string (str): a valid command (see above) Write a function validate_input(string) which takes a command string in the format 'command argl arg2' and returns the pair 'command, [argi, Return tuplexstr, list