Update app.py

app.py

@@ -50,7 +50,7 @@ file = st.file_uploader('Upload an Image',type=(["jpeg","jpg","png"]))
 if file is None:
     st.write("Please upload an image file")
 else:
-    image= Image.open(f)
+    image= Image.open(file)
     st.image(image,use_column_width = True)
     with NamedTemporaryFile(dir='.', suffix='.csv') as f:
         f.write(file.getbuffer())