abb.py

def encrypt(text, s):

    result = ""
    # transverse the plain text
    for i in range(len(text)):
        char = text[i]
        # Encrypt uppercase characters in plain text

        if (char.isupper()):
            result += chr((ord(char) + s - 65) % 26 + 65)
        # Encrypt lowercase characters in plain text
        else:
            result += chr((ord(char) + s - 97) % 26 + 97)
    return result


def decrypt(text):
    trans = ""
    for i in range(len(text)):
        char = text[i]

    pass


# check the above function
text = "CEASER CIPHER DEMO test"
s = 4

print("Plain Text : " + text)
print("Shift pattern : " + str(s))
print("Cipher: " + encrypt(text, s))