app.py

import streamlit as st
import pandas as pd

data = pd.read_csv("test.csv")
for line in data:
  st.write(line)
  
title = st.text_input('Movie title', 'Life of Brian')
if st.button('Submit'):
  data.loc[len(data)] = title
  st.write(data)

  for line in data:
    st.write(line)