Update app.py

app.py

@@ -41,7 +41,7 @@ if df2 is not None:
 model_path = st.text_input("Model path (HuggingFace or local)", value="all-MiniLM-L6-v2")
 ##More on model selection available on https://linktransformer.github.io/
 
-if not df1==None and not df2==None:
+if df1_upload is not None and df2_upload is not None:
     # Checkbox for columns to match on
     if not df1.empty and not df2.empty:
         columns_df1 = df1.columns.tolist()