python 3.9 to uppercase code example

Example 1: how do you change a string to only uppercase in python

original = Hello, World!

#both of these work
upper = original.upper()
upper = upper(original)

Example 2: python 3 calculate uppercase lowercase letter

world = input()
upper,lower = 0,0

for i in world:
    upper+=i.isupper()
    lower+=i.islower()

print("UPPER CASE {0}\nLOWER CASE {1}".format(upper,lower))