title: How to use python-telegram-bot to send messages to a telegram channel
body: <p>I created a telegram bot and added it to my telegram channel. Now, I want to use it to send messages to my channel, when something is happening in my python program. For example, I have a python program that checks the weather every 15 secs, and when there's a change in the weather, I want my bot to send the new weather information to my telegram channel.</p>
  <p>So my question is, how can I do it? I'm stuck because python-telegram-bot requires a message from the user to get triggered, or a scheduled orders, while I can't schedule it because I don't know when the weather will change.</p>