app.py

import pandas as pd
import streamlit as st

uploaded_file = st.file_uploader("Choose a JSon file: ", type="json")

if uploaded_file is not None:
    df=pd.read_json(uploaded_file)

    Csv_filr=df.to_csv(index=False).encode()

    st.download_button(
        label="Download the csv file",
        data='csv_file',
        file_name='converted_file.csv',
        mime='csv',
    )