refractor lib code

lib/Comands.py

@@ -1,11 +1,5 @@
 import json
-from os import walk, path
-
-
-def check_json():
-    if not path.isfile('prefix.json'):
-        with open('prefix.json', 'w+', encoding='utf-8') as f:
-            f.write("")
+from os import walk
 
 
 async def set_prefix(guildid: int, prefix: str) -> None:
@@ -25,7 +19,6 @@ async def list_files(fold: str = 'audio'):
 
 async def read_json(guild: int, param: str):
     with open('prefix.json', 'r', encoding='utf-8') as fp:  # Open the JSON
-        parameter = None
         try:
             _json = json.load(fp)  # Load the custom prefixes
         except TypeError:
@@ -39,6 +32,7 @@ async def read_json(guild: int, param: str):
                 pass
         except:
             pass
+
     return parameter
 
 
@@ -66,7 +60,6 @@ async def determine_prefix(bot, msg):
     :return: prefix for server, default is $
     """
     with open('prefix.json', 'r', encoding='utf-8') as fp:  # Open the JSON
-        parameter: str
         try:
             from json import load
             _json = load(fp)  # Load the custom prefixes