Code Editor for app.py

import streamlit as st
import pandas as pd
import json

from st_aggrid import AgGrid, GridOptionsBuilder
from code_editor import code_editor


@st.cache_data
def get_data():
    return pd.read_json("https://www.ag-grid.com/example-assets/olympic-winners.json")


df = get_data()

gd = GridOptionsBuilder().from_dataframe(df)
gd.configure_selection(selection_mode="multiple", use_checkbox=True)
gridOptions = gd.build()


tabs = st.tabs(['Grid', 'GridOptions', 'AgGridReturn.selected_data'])

with tabs[0]:
    response = AgGrid(df, gridOptions, key='grid1')

with tabs[1]:
    text = code_editor(
        json.dumps(gridOptions, indent=4),
        lang="json",
        props={'readOnly': False},
        height='300px'
    ).get('text', '')

    if text != '':
        gridOptions = json.loads(text)


with tabs[2]:
    selected_data = response.selected_data

    if selected_data is None:
        st.write('Nothing was selected!')
    else:
        st.write(response.selected_data)