Update src/streamlit_app.py

src/streamlit_app.py

@@ -15,14 +15,23 @@ st.markdown(
 - **Purpose:** Explore crime-type distribution and arrest outcomes via pie charts.
 """
 )
+HERE = Path(__file__).parent            # e.g. /app/src
+DATA_PATH = HERE / "crime_data.csv"     # /app/src/crime_data.csv
 
 @st.cache_data
 def load_data():
-    data_path = "crime_data.csv"
-    return pd.read_csv(data_path)
+    if not DATA_PATH.exists():
+        st.error(
+            f"❌ Could not find `crime_data.csv` at:\n\n  {DATA_PATH}\n\n"
+            "Make sure your CSV is placed in the same folder as this script."
+        )
+        return pd.DataFrame()  # return empty so the app doesn’t crash
+    return pd.read_csv(DATA_PATH)
 
 df = load_data()
-
+if df.empty:
+    st.stop()  # no further execution
+    
 # 3. Data preview
 st.header("Data Preview")
 st.write(f"Total records: {df.shape[0]}  |  Total columns: {df.shape[1]}")