Update app.py

app.py

@@ -1,6 +1,7 @@
 import gradio as gr
 import pandas as pd
 from groq import Groq
+import os
 
 def excel_to_csv(fi):
     df = pd.read_excel(fi)
@@ -11,7 +12,7 @@ def excel_to_csv(fi):
     
     df = df.to_csv(path_or_buf = "here2.csv")
 
-    return gr.Dropdown(choices=clm, label="Columns of the file", multiselect=True, allow_custom_value=True), "here2.csv"
+    return gr.Dropdown(choices=clm,value=clm, label="Columns of the file", multiselect=True, allow_custom_value=True), "here2.csv"
 
 def text_to_neo4j(rm, cm):
     prompt = """