+def caesar(s, alphabet, shift):
+ if shift == 0:
+ return s
+ l = len(alphabet)
+ return ''.join(
+ alphabet[(alphabet.index(c) + shift) % l] if c in alphabet else c
+ for c in s)
+
+
+def rot47(s):
+ return caesar(s, r'''!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~''', 47)
+
+