Update app.py

app.py

@@ -36,10 +36,10 @@ def foo(dir):
 
 # debug use
 with gr.Blocks() as foo:
-    input = gr.File(file_count="directory")
-    files = gr.Textbox()
+    i = gr.File(file_count="directory")
+    o = gr.Textbox()
     show = gr.Button(value="Show")
-    show.click(fn=foo, inputs=input, outputs=files)
+    show.click(fn=foo, inputs=i, outputs=o)