send telegram bot message python

import requests

def send_msg(text):
   token = "your_token"
   chat_id = "your_chatId"
   url_req = "https://api.telegram.org/bot" + token + "/sendMessage" + "?chat_id=" + chat_id + "&text=" + text 
   results = requests.get(url_req)
   print(results.json())

send_msg("Hello there!")

def echo(update, context):
    context.bot.send_message(chat_id=update.effective_chat.id, text=update.message.text)

from telegram.ext import MessageHandler, Filters
echo_handler = MessageHandler(Filters.text & (~Filters.command), echo)
dispatcher.add_handler(echo_handler)