In python write a program for the following: The four compass points can be abbreviated by single$-$letter strings as $$N$,$E$,$S$,$ and $$W$.$ Write a function $`$turn$\_$clockwise $($compass$\_$point:str$)`$ that takes one of these four compass points as its parameter, and returns the next compass point in the clockwise direction. If $`$compass$\_$point$`$ has another value that's distinct from the four compass points listed earlier, return the value $`$None$`.$

Input:

String representing a cardinal direction

Output:

String representing a cardinal direction that is a $90$ degree clockwise turn from the input cardinal direction.

Example Cases:

$```$

turn$\_$clockwise$("$N$")=>"$E$"$

turn$\_$clockwise$("$W$")=>"$N$"$

turn$\_$clockwise$("$S$")=>"$W$"$

turn$\_$clockwise$("$E$")=>"$S$"$

turn$\_$clockwise$(42)=>$ None

turn$\_$clockwise$("$rubbish$")=>$ None