Streamlit buttons-to-insert-words (predictive text) demo

streamlit_predictive_text.py

import streamlit as st
import random

words = ['hello', 'world', 'goodbye', 'moon']
random.shuffle(words)

essay = st.text_area("Essay", "", key="essay")

def append_word(word):
    st.session_state['essay'] = (
        st.session_state['essay'] + " " + word
    )

columns = st.columns(len(words))
for col, word in zip(columns, words):
    with col:
        st.button(word, on_click=append_word, args=(word,))