a='sdSdsfdAdsdsdfsfdsdASDSDFDSFa' print(a.upper()) print(a.lower()) print(a.swapcase()) b=a.swapcase() c='' for i in b: if i.isupper(): i=chr(155-ord(i)) c +=i elif i.islower(): i=chr(219-ord(i)) c +=i print(c)