Descrambler for Caesar cipher.

caesar.py

ALPHA = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
alpha = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]

word = input("Please Enter Words: ")
for i in range(len(alpha)):
    process = ""
    for w in word:
        if w in alpha:
            n = alpha.index(w) + i
            if n > 25:
                n -= 26
            process += alpha[n]
        elif w in ALPHA:
            n = ALPHA.index(w) + i
            if n > 25:
                n -= 26
            process += ALPHA[n]
        else:
            process += w
    print(process, i)
    print("")