Update app.py

app.py

@@ -263,13 +263,28 @@ with gr.Blocks() as demo:
 """
     )
 
-        keyword_path_display = gr.Textbox(label="현재 키워드 경로", interactive=False)
-        keyword_selector = gr.Radio(choices=get_keywords([]), label="키워드 선택", value=None)
+    keyword_path_display = gr.Textbox(label="현재 키워드 경로", interactive=False)
+    keyword_selector = gr.Radio(choices=get_keywords([]), label="키워드 선택", value=None)
 
-        keyword_selector.change(
-            fn=on_keyword_select,
-            inputs=[keyword_selector, path_state],
-            outputs=[keyword_path_display, path_state, keyword_selector]
-        )
+    keyword_selector.change(
+        fn=on_keyword_select,
+        inputs=[keyword_selector, path_state],
+        outputs=[keyword_path_display, path_state, keyword_selector]
+    )
+
+    # 뒤로가기 버튼 추가
+    def on_back_click(path):
+        if path:
+            path = path[:-1]
+        next_keywords = get_keywords(path)
+        formatted = format_path(path)
+        return formatted, path, gr.update(choices=next_keywords)
+
+    back_btn = gr.Button("🔙 한 단계 뒤로가기")
+    back_btn.click(
+        fn=on_back_click,
+        inputs=[path_state],
+        outputs=[keyword_path_display, path_state, keyword_selector]
+    )
 
 demo.launch()