Python To Count Upper And Lower Case

def countUpperAndLowerCase(sentence):
    upper = 0
    lower = 0
    for i in sentence:
        if i >= 'A' and i <= 'Z':
            upper += 1
        elif i >= 'a' and i <= 'z':
            lower += 1
    print("Upper case: " + str(upper))
    print("Lower case: " + str(lower))

countUpperAndLowerCase("Hello World")


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