#program to encrypt/decrypt using the Caesar cipher #function to encrypt/decrypt one character #assume char is alphabetic def caesarShift(char, num): if char.islower(): #lowercase letters have ASCII values 97 to 122 val = ord(char) - 97 + num return chr((val % 26) + 97) else: #uppercase letters have ASCII values 65 to 90 val = ord(char) - 65 + num return chr((val % 26) + 65) #do some encryption/decryption original = input("Enter some text: ") shift = int(input("Enter the shift amount: ")) transformed = "" for char in original: if char.isalpha(): transformed = transformed + caesarShift(char, shift) else: transformed = transformed + char print(transformed)