Follow Flake8 pep3101 and remove modulo formatting (#7339)

* ci: Add ``flake8-pep3101`` plugin to ``pre-commit``

* refactor: Remove all modulo string formatting

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* refactor: Remove ``flake8-pep3101`` plugin from ``pre-commit``

* revert: Revert to modulo formatting

* refactor: Use f-string instead of `join`

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ciphers/elgamal_key_generator.py

@@ -41,22 +41,19 @@ def make_key_files(name: str, key_size: int) -> None:
     if os.path.exists(f"{name}_pubkey.txt") or os.path.exists(f"{name}_privkey.txt"):
         print("\nWARNING:")
         print(
-            '"%s_pubkey.txt" or "%s_privkey.txt" already exists. \n'
+            f'"{name}_pubkey.txt" or "{name}_privkey.txt" already exists. \n'
             "Use a different name or delete these files and re-run this program."
-            % (name, name)
         )
         sys.exit()
 
     public_key, private_key = generate_key(key_size)
     print(f"\nWriting public key to file {name}_pubkey.txt...")
     with open(f"{name}_pubkey.txt", "w") as fo:
-        fo.write(
-            "%d,%d,%d,%d" % (public_key[0], public_key[1], public_key[2], public_key[3])
-        )
+        fo.write(f"{public_key[0]},{public_key[1]},{public_key[2]},{public_key[3]}")
 
     print(f"Writing private key to file {name}_privkey.txt...")
     with open(f"{name}_privkey.txt", "w") as fo:
-        fo.write("%d,%d" % (private_key[0], private_key[1]))
+        fo.write(f"{private_key[0]},{private_key[1]}")
 
 
 def main() -> None:

ciphers/rsa_key_generator.py

@@ -37,9 +37,8 @@ def make_key_files(name: str, key_size: int) -> None:
     if os.path.exists(f"{name}_pubkey.txt") or os.path.exists(f"{name}_privkey.txt"):
         print("\nWARNING:")
         print(
-            '"%s_pubkey.txt" or "%s_privkey.txt" already exists. \n'
+            f'"{name}_pubkey.txt" or "{name}_privkey.txt" already exists. \n'
             "Use a different name or delete these files and re-run this program."
-            % (name, name)
         )
         sys.exit()