upper( ) Function
The upper( ) Function is used to convert all the characters/letters of the String in lower case.
x = "HeLLo" y = x.upper() print("The String in upper case is ",y)
In the above code, we have declared a String 'HeLLo', in which the letters 'e' and 'o' are in lower case.
So, we have used the 'upper( )' Function to convert them to upper case and assign to a variable 'y'.