Update app.py

app.py

@@ -102,16 +102,17 @@ if viz_type == "Complaints Over Time":
 #         key=f"block_select_{viz_type}"  # Unique key for each visualization
 #     )
 
+# Dropdown for Housing Block (only show for relevant visualizations)
 if viz_type in ["Complaints by Housing Block and Type", 
                 "Complaints by Housing Block and Type (Incorporating Suggestions Based on Professor's Feedback)"]:
     block_options = ['All Blocks'] + sorted(data['Housing Block'].unique().tolist())
     selected_block = st.sidebar.selectbox(
         "Select Housing Block", 
         options=block_options, 
-        key="block_select"  # Single key for the dropdown
+        key=f"block_select_{viz_type.replace(' ', '_')}"  # Unique key for each visualization
     )
 else:
-    selected_block = 'All Blocks'
+    selected_block = 'All Blocks'  # Default value if not applicable
     
 # # Ensuring selected_block is only used if defined
 # if viz_type in ["Complaints by Housing Block and Type", "Complaints by Housing Block and Type (Incorporating Suggestions Based on Professor's Feedback)"] and 'selected_block' not in locals():