Question

How to invert the letters case in a String uppercase to lowercase and lowercase to uppercase in Python

Answer 1

def invert_letters_case(s):
    return ''.join(ch.lower() if ch.isupper() else ch.upper() for ch in s)

s = 'Python Programming'
s = invert_letters_case(s)
print(s)

print(invert_letters_case("Programming"))


'''
run:

pYTHON pROGRAMMING
pROGRAMMING

'''

 

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Answer 2

s = 'Python Programming'
s = s.swapcase()
print(s)

print("Programming".swapcase())


'''
run:

pYTHON pROGRAMMING
pROGRAMMING

'''

 

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