Write a program stored in a file q$5.$py that asks the user to enter a string and performs the

following tasks.

$$ Checks if the string follows all the constrains given below otherwise it prints "Invalid String"

and terminates:

$$ The length is equal to $6$

$$ It starts with an Upper Case letter

$$ Every letter is followed by one number

$$ A letter cannot be followed by a letter

$$ A number cannot be followed by a number

$$ String ends with $!$

$$ Extract only the letters from the string and store it in a variable and print the variable

$$ Extract only the numbers from the string and store it in a variable

$$ Store all the positive divisors of the number in an array and print the array.

$$ If the number is prime, print YES otherwise NO$.$