Update app.py

app.py

@@ -55,6 +55,13 @@ if uploaded_files:
             imputer = SimpleImputer(strategy='most_frequent')
             df[categorical_cols] = imputer.fit_transform(df[categorical_cols])
             dataframes[i] = df
+    st.markdown("Data transform")
+    
+    columns = st.selectbox("Select  column", dataframes.columns)
+    old_values = st.multiselect("Current Values",list(dataframes[columns].unique()),list(dataframes[columns].unique()))
+
+
+
     
     show_dataframes = st.checkbox("Show DataFrames", value=True)
     if show_dataframes:
@@ -62,7 +69,7 @@ if uploaded_files:
             st.write(f"DataFrame {i + 1}")
             st.dataframe(df)
             
-    st.markdown("Data transform")
+
     
 if st.button("Download cleaned data"):
     for i, df in enumerate(dataframes):