Update app.py

app.py

@@ -72,7 +72,7 @@ def save_data(disease,symp_data,invest_data,drug_data,advice_data):
     print(existing_rows)
     try:
         print("In try")
-        with open("./demo1.csv", mode="w", newline="") as csvfile:
+        with open("./demo1.csv", mode="a") as csvfile:
             print("In open csv file",csvfile)
             csv_writer = csv.writer(csvfile)
             csv_writer.writerow([disease,symp_data,invest_data,drug_data,advice_data,user])