Refactor MongoDB connection in Streamlit app to use environment variable for URI instead of secrets, improving flexibility for deployment.

src/streamlit_app.py

@@ -3,18 +3,19 @@ import pandas as pd
 import streamlit as st
 from itertools import combinations
 import pymongo
+import os
 
 st.set_page_config(layout="wide")
 
 @st.cache_resource
 def init_conn():
-        
-        uri = st.secrets['mongo_uri']
-        client = pymongo.MongoClient(uri, retryWrites=True, serverSelectionTimeoutMS=500000)
-        db = client["MLB_Database"]
 
-        return db
-    
+    uri = os.getenv('mongo_uri')
+    client = pymongo.MongoClient(uri, retryWrites=True, serverSelectionTimeoutMS=500000)
+    db = client["MLB_Database"]
+
+    return db
+
 db = init_conn()
 
 game_format = {'Win Percentage': '{:.2%}','First Inning Lead Percentage': '{:.2%}',