Define load world function

helper.py

@@ -1,7 +1,7 @@
 # Add your utilities or helper functions to this file.
 import os
-from dotenv import load_dotenv, find_dotenv
 import json
+from dotenv import load_dotenv, find_dotenv
 from together import Together
 
 def load_env():
@@ -17,4 +17,9 @@ def save_world(world, filename):
 
 def get_together_api_key():
     load_env()
-    return os.getenv("TOGETHER_API_KEY")
+    return os.getenv("TOGETHER_API_KEY")
+
+
+def load_world(filename):
+    with open(filename, 'r') as f:
+        return json.load(f)