How can I send 100 requests at once

Question

 import requests as r
 for key in open('exmp.txt', 'r+', encoding='utf-8').read().splitlines():
     try:
         data = { 'secret_id': key }
         first = r.post('https://myurl.com', data = data)
         print(f"{key} | {first.json()['message']}")
     except:
         pass

It's just a simple code that gives response one by one which takes forever to complete I want to send 100 requests at once but I have no idea what should I use