Update app.py

app.py

@@ -135,7 +135,7 @@ def CTXGen(τ, g_num, length_range):
                         'Potency_probability': act_probability_all,
                         'random_seed': seed
                     })
-                    out.to_csv("output.csv", index=False, encoding='utf-8-sig')
+                    out.to_csv("output.csv", index=True, encoding='utf-8-sig')
                     count += 1
                     yield out, "output.csv"
     return out, "output.csv"