Update app.py

app.py

@@ -166,12 +166,17 @@ sentence_vectors = st.session_state.sentence_vectors
 description_text.text("説明文の意味が近い「いらすとや」画像を検索します。\nキーワードを列挙するよりも、自然な文章を入力した方が精度よく検索できます。")
 
 prev_query = ""
-query_input = st.text_input(label="説明文", value="")
+query_input = st.text_input(label="説明文", value="", on_change=clear_result)
 
 closest_n = st.number_input(label="検索数", min_value=1, value=10, max_value=100) 
 
 search_buttion = st.button("検索")
 
+result_text = st.empty()
+
+def clear_result():
+    result_text.text("")
+
 if search_buttion or prev_query != query_input:
     query = normalize_text(query_input)
     prev_query = query_input
@@ -190,4 +195,4 @@ if search_buttion or prev_query != query_input:
         for img_url in df.iloc[idx]["images"]:
             md_content += f'<a href="{page_url}" target="_blank" rel="noopener noreferrer"><img src="{img_url}" width="100"></a>'
         md_content += f'\n[{distance / 2:.4f}: {df.iloc[idx]["description"]}]({page_url})'
-        st.markdown(md_content, unsafe_allow_html=True)
+        result_text.markdown(md_content, unsafe_allow_html=True)