Given a variable s associated with a str, write an expression whose value is a str that is identical except that all the letters in it are upper-case. Thus, if the str associated with s were "McGraw15", the value of the expression would be "MCGRAW15".

following are expression to this question:

s.upper()

Explanation:

Example to use upper method:

s= "McGraw15" #defining string variable that holds a value

print (s) #print value

print ('changing into upper case: ')  #print message

print (s.upper()) # call upper method and print its value

Output:

McGraw15

changing into upper case:  

MCGRAW15

Description of upper method:

what? ? i don't get it