Python Algoritma Challenge

say = "Rirelbar guvaxf bs punatvat gur jbeyq, ohg ab bar guvaxf bs punatvat uvzfrys"

kaynak = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
hedef =  'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM'

çeviri_tablosu = str.maketrans(kaynak, hedef)

print(say.translate(çeviri_tablosu))

In [1]: say = "Rirelbar guvaxf bs punatvat gur jbeyq, ohg ab bar guvax
   ...: f bs punatvat uvzfrys"

In [2]: __import__("codecs").decode(say, "rot_13")
Out[2]: 'Everyone thinks of changing the world, but no one thinks of changing himself'

In [1]: say = "Rirelbar guvaxf bs punatvat gur jbeyq, ohg ab bar guvax
   ...: f bs punatvat uvzfrys"

In [2]: d = {}
   ...: for c in (65, 97):
   ...:     for i in range(26):
   ...:         d[chr(i+c)] = chr((i+13) % 26 + c)
   ...:
   ...: print("".join([d.get(c, c) for c in say]))
Everyone thinks of changing the world, but no one thinks of changing himself