Swap case of letters in string input parameter [closed]
I would like to write a function in Python that takes a string which has lower and upper case letters as a parameter and converts upper case letters to lower case, and lower case letters to upper case. For example: >>> func('DDDddddd') 'dddDDDDD' I want to do it with strings but I couldn't figure out how. EDIT - Way simpler than my original answer, and supports both ASCII and unicode. Thanks commenters. a = 'aBcD' a.swapcase() >> AbCd Original answer - disregard a = 'aBcD' ''.join(map(str.swapcase, a)) >> AbCd This will map the str.swapcase() function to each element of the string a , swapping