app.py

import streamlit as st
from requests_toolkit import  AirQualityQuery


st.markdown('''# Country Air Quality Ranking''')
country =  st.text_input(
    label=' ',
    placeholder=' Which country do you want to query?',
    # label_visibility = 'collapsed'
)

if country is not None and country != '':
    md_head = '''| ID | City |Province | US AQI |
| -------- | -------- | -------- | -------- |
'''
    md= st.empty()
    generator = AirQualityQuery.air_quality_by_country(country, return_frequency=10)
    while True:
        try:
            with st.spinner():
                i = next(generator)
            new_md = ''
            for id, j in enumerate(i):
                new_md += f'''|{id + 1}|{j[0]}|{j[1]}|{j[2]}|\n'''
            md.markdown(md_head + new_md)
        except StopIteration:
            break