Displays a user’s input back in upper and lower cases

Takes input from the user and displays that input back in upper and lower cases.

user_input = input("What's your favourite language? ")

print("My favourite language is ", user_input.upper())
print("My favourite language is ", user_input.lower())

Output:

What's your favourite language? english
My favourite language is  ENGLISH
My favourite language is  english

See also

https://www.w3resource.com/python-exercises/string/python-data-type-string-exercise-13.php