Update app.py

app.py

@@ -14,12 +14,11 @@ df['Date'] = pd.to_datetime(df['Date'])
 df['Month'] = df['Date'].dt.to_period('M')
 df['Day'] = df['Date'].dt.date
 
-
 # --- GRADIO FUNCTION ---
 def show_sentiment(selected_companies, aggregation="Day"):
     # filtraggio aziende
     if selected_companies:
-        df_filtered = df[df['Company'].isin(selected_companies)]
+        df_filtered = df[df['Company'].isin(selected_companies)].copy()
     else:
         df_filtered = df.copy()
     
@@ -28,6 +27,8 @@ def show_sentiment(selected_companies, aggregation="Day"):
         group_col = "Day"
     elif aggregation == "Month":
         group_col = "Month"
+        # Convertiamo Period in datetime per Plotly
+        df_filtered['Month'] = df_filtered['Month'].dt.to_timestamp()
     elif aggregation == "Year":
         group_col = "Year"
     else: