Fixed annotations

ciphers/a1z26.py

@@ -7,7 +7,10 @@ http://bestcodes.weebly.com/a1z26.html
 """
 
 
-def encode(plain: str) -> list[int]:
+from typing import List
+
+
+def encode(plain: str) -> List[int]:
     """
     >>> encode("myname")
     [13, 25, 14, 1, 13, 5]
@@ -15,7 +18,7 @@ def encode(plain: str) -> list[int]:
     return [ord(elem) - 96 for elem in plain]
 
 
-def decode(encoded: list[int]) -> str:
+def decode(encoded: List[int]) -> str:
     """
     >>> decode([13, 25, 14, 1, 13, 5])
     'myname'

ciphers/trafid_cipher.py

@@ -1,7 +1,10 @@
 # https://en.wikipedia.org/wiki/Trifid_cipher
 
 
-def __encryptPart(messagePart: str, character2Number: dict[str, str]) -> str:
+from typing import Tuple, Dict
+
+
+def __encryptPart(messagePart: str, character2Number: Dict[str, str]) -> str:
     one, two, three = "", "", ""
     tmp = []
 
@@ -17,8 +20,8 @@ def __encryptPart(messagePart: str, character2Number: dict[str, str]) -> str:
 
 
 def __decryptPart(
-    messagePart: str, character2Number: dict[str, str]
-) -> tuple[str, str, str]:
+    messagePart: str, character2Number: Dict[str, str]
+) -> Tuple[str, str, str]:
     tmp, thisPart = "", ""
     result = []
 
@@ -36,7 +39,7 @@ def __decryptPart(
 
 def __prepare(
     message: str, alphabet: str
-) -> tuple[str, str, dict[str, str], dict[str, str]]:
+) -> Tuple[str, str, Dict[str, str], Dict[str, str]]:
     # Validate message and alphabet, set to upper and remove spaces
     alphabet = alphabet.replace(" ", "").upper()
     message = message.replace(" ", "").upper()

ciphers/xor_cipher.py

@@ -18,6 +18,9 @@
 """
 
 
+from typing import List
+
+
 class XORCipher:
     def __init__(self, key: int = 0):
         """
@@ -28,7 +31,7 @@ class XORCipher:
         # private field
         self.__key = key
 
-    def encrypt(self, content: str, key: int) -> list[str]:
+    def encrypt(self, content: str, key: int) -> List[str]:
         """
         input: 'content' of type string and 'key' of type int
         output: encrypted string 'content' as a list of chars
@@ -53,7 +56,7 @@ class XORCipher:
 
         return ans
 
-    def decrypt(self, content: str, key: int) -> list[str]:
+    def decrypt(self, content: str, key: int) -> List[str]:
         """
         input: 'content' of type list and 'key' of type int
         output: decrypted string 'content' as a list of chars