import urllib.request, urllib.parse, json, os

TELEGRAM_TOKEN   = os.environ.get('TELEGRAM_TOKEN', '')
TELEGRAM_CHAT_ID = os.environ.get('TELEGRAM_CHAT_ID', '')

msg = (
    '\U0001F514 <b>RECORDATORIO</b>\n\n'
    'Esperar llamada de <b>Jaime Otero</b>\n'
    'Hora: <b>12:00 PM</b>'
)

params = {
    'chat_id':    TELEGRAM_CHAT_ID,
    'text':       msg,
    'parse_mode': 'HTML',
    'disable_notification': 'false',
}
data = urllib.parse.urlencode(params).encode()
url  = f'https://api.telegram.org/bot{TELEGRAM_TOKEN}/sendMessage'
urllib.request.urlopen(urllib.request.Request(url, data=data), timeout=10)