purpose = input("What's your purpose - Encryption(e) or Decryption(d)? Type 'e' or 'd': ")

language = input('Choose language: English(en) or Russian(ru)? Type "en" or "ru": ')

shift = int(input("Choose code's shift in numbers (For example - 7): "))

text = input('Enter your text: ')

def caesars_encrypt_en(text_inp, shift_inp):

encrypted_text = ''

for c in text_inp:

encrypted_letter = c

if c.isalpha():

if c.isupper():

encrypted_letter = ord(c) + shift_inp

if 90 < encrypted_letter < 97:

encrypted_letter -= 26

elif c.islower():

encrypted_letter = ord(c) + shift_inp

if encrypted_letter > 122:

encrypted_letter -= 26

encrypted_letter = chr(encrypted_letter)

encrypted_text += encrypted_letter

return encrypted_text

def caesars_decrypt_en(text_inp, shift_inp):

decrypted_text = ''

for c in text_inp:

decrypted_letter = c

if c.isalpha():

if c.isupper():

decrypted_letter = ord(c) - shift_inp

if decrypted_letter < 65:

decrypted_letter += 26

elif c.islower():

decrypted_letter = ord(c) - shift_inp

if decrypted_letter < 97:

decrypted_letter += 26

decrypted_letter = chr(decrypted_letter)

decrypted_text += decrypted_letter

return decrypted_text

# Русский сделан только для прописных букв. Нужно дополнить!

def caesars_encrypt_ru(text_inp, shift_inp):

encrypted_text = ''

for c in text_inp:

encrypted_letter = c

if c.isalpha():

encrypted_letter = ord(c) + shift_inp

if encrypted_letter > 1103:

encrypted_letter -= 32

encrypted_letter = chr(encrypted_letter)

encrypted_text += encrypted_letter

return encrypted_text

def caesars_decrypt_ru(text_inp, shift_inp):

decrypted_text = ''

for c in text_inp:

decrypted_letter = c

if c.isalpha():

decrypted_letter = ord(c) - shift_inp

if decrypted_letter < 1072:

decrypted_letter += 32

decrypted_letter = chr(decrypted_letter)

decrypted_text += decrypted_letter

return decrypted_text

if purpose == 'e' and language == 'en':

print(caesars_encrypt_en(text, shift))

if purpose == 'd' and language == 'en':

print(caesars_decrypt_en(text, shift))

if purpose == 'e' and language == 'ru':

print(caesars_encrypt_ru(text, shift))

if purpose == 'd' and language == 'ru':

print(caesars_decrypt_ru(text, shift))