Update app.py

app.py

@@ -4,6 +4,8 @@ import os
 uploaded_file = st.sidebar.file_uploader("Choose a file")
 if uploaded_file is not None:
   filename = uploaded_file.name
+  with open(filename, "wb") as f:
+    f.write(uploaded_file.getbuffer())
   st.write(os.listdir("./"))
   st.write(os.listdir("/"))
   st.write(os.listdir("/home"))