Optimized & refactorized code.

breakrot.py

@@ -1,18 +1,17 @@
-from rot import decrypt as dec
-from rot import chars
+from rot import rot
 from sys import argv
 from collections import Counter
 
-def brkc(m: str, f: str, x: int):
+def breakRot(m: str, f: str, x: int):
     t=tuple(open(f).read().splitlines()[:x])
-    decm=[]
-    for i in range(1, len(chars)):
-        decmsg=dec(m, i)
-        print(f"{i}: {decmsg}")
+    poss=[]
+    for i in range(1, 26):
+        msg=rot(m, -i)
+        print(f"{i}: {msg}")
         for x in t:
-            if x.upper() in decmsg:
-                decm.append(decmsg)
-    return Counter(decm)
+            if x.upper() in msg.upper():
+                poss.append(msg)
+    return Counter(poss)
 
 if __name__ == "__main__":
     try:
@@ -23,4 +22,4 @@ if __name__ == "__main__":
         a=input("Give encoded text to break: ")
         b=input("Give filename of file which contains wordlist: ")
         c=int(input("Type how many words to read from the wordlist ('-1'=every): "))
-    print(brkc(a, b, c))
+    print(breakRot(a, b, c))

rot.py

@@ -1,23 +1,10 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python3.10
 
-from string import ascii_uppercase as chars
+from string import ascii_lowercase as lc, ascii_uppercase as uc
 from sys import argv
 
-def encrypt(s: str, i: int):
-    enc=""
-    for x in range(len(s)):
-        for y in range(len(chars)):
-            if s[x].upper() == chars[y]:
-                enc+=chars[(y+i)%len(chars)]
-    return enc
-
-def decrypt(s: str, i: int):
-    dec=""
-    for x in range(len(s)):
-        for y in range(len(chars)):
-            if s[x].upper() == chars[y]:
-                dec+=chars[(y-i)%len(chars)]
-    return dec
+def rot(m: str, n: int):
+    return m.translate(m.maketrans(lc + uc, lc[n:] + lc[:n] + uc[n:] + uc[:n]))
 
 if __name__ == "__main__":
     try:
@@ -26,4 +13,4 @@ if __name__ == "__main__":
     except IndexError:
         a=input("Give text to encode/decode: ")
         b=int(input("Type how many shifts do you want to do: "))
-    print(f"Encrypted: {encrypt(a, b)}\nDecrypted: {decrypt(a, b)}")
+    print(f"Text: {rot(a, b)}")