add power-filter, total num of filtered list

app.py

@@ -67,6 +67,9 @@ def display_image(url, scale=0.5):
     st.image(image.resize(( int(image.width * scale), int(image.height * scale))))
 
 def display_heroes_from_df(df,display_cols=display_cols):
+    vtob = "is" if len(df)<=1 else "are"
+    st.write(f'There {vtob} {len(df)} heroes in the filtered list')
+    
     st.dataframe(df[display_cols],
                  column_config={
                          "image": st.column_config.ImageColumn("Avatar", help="")},
@@ -191,6 +194,7 @@ if genre == ':rainbow[Heroes Explorer]':
         st.header("Stat Filters")
         st.write("Tips: put the **minimum** att/def/hp stat you want to filter heroes")
         with st.expander("Stat Options"):   
+            power_option = st.text_input(label="Power:", value="0")
             defense_option = st.text_input(label="Defense:", value="0")
             attack_option = st.text_input(label="Attack:", value="0")
             health_option = st.text_input(label="Health:", value="0")
@@ -219,6 +223,10 @@ if genre == ':rainbow[Heroes Explorer]':
     if source_option != 'None':
         idx_all.append(filter_by_1col(df, 'source', source_option, exact_flag=False))    
 
+    if power_option != "0":
+        power_option = int(power_option)
+        idx_all.append(filter_by_1col_num(df, 'power', power_option, oper_flag="ge"))
+    
     if defense_option != "0":
         defense_option = int(defense_option)
         idx_all.append(filter_by_1col_num(df, 'defense', defense_option, oper_flag="ge"))   
@@ -238,7 +246,7 @@ if genre == ':rainbow[Heroes Explorer]':
         idx_all.append(filter_by_1col(df, 'effects', special_text_option, exact_flag=False))    
     
     #########################################
-    st.header(f'Updated: Oct 23, 2023 -- Total heroes = {len(df)}')
+    st.write(f'### Updated: Oct 23, 2023 -- Total heroes in HeroPlan database = {len(df)}')
 
     df2 = df[np.all(idx_all,axis=0)]