Swap cases in a string

Question

I\'m trying to solve this challenge in hackerrank, which asks to convert all lowercase letters to uppercase letters and vice versa.

I attempt it with the following code:

Answer 1

def swap_case(s):
    return s.swapcase()

#or you can use list comprehension 

def swap_case(s):
    new=[ch.lower() if ch.isupper() else ch.upper() for ch in s]
    new=''.join(new)
    return new

if __name__ == '__main__':
    s = input()
    result = swap_case(s)
    print(result)