Update app.py

app.py

@@ -175,6 +175,8 @@ def save_openweather_historical_to_csv(openweather_historical_readings):
         
         # Create a DataFrame from the readings  
         df = pd.DataFrame([openweather_historical_readings])  # Assuming a single row of data  
+        print("DataFrame shape:", df.shape)  
+        print("DataFrame columns:", df.columns)  
         
         # Ensure the DataFrame is not empty  
         if df.empty: