# Telethon’s Documentation

    from telethon.sync import TelegramClient, events

    with TelegramClient('name', api_id, api_hash) as client:
       client.send_message('me', 'Hello, myself!')
       print(client.download_profile_photo('me'))

       @client.on(events.NewMessage(pattern='(?i).*Hello'))
       async def handler(event):
          await event.reply('Hey!')

       client.run_until_disconnected()

- Are you new here? Jump straight into Installation!

- Looking for the method reference? See Client Reference.

- Did you upgrade the library? Please read Changelog (Version History).

- Used Telethon before v1.0? See Compatibility and Convenience.

- Coming from Bot API or want to create new bots? See HTTP Bot API vs MTProto.

- Need the full API reference? https://tl.telethon.dev/.

## What is this?

Telegram is a popular messaging application. This library is meant to make it easy for you to write Python programs that can interact with Telegram. Think of it as a wrapper that has already done the heavy job for you, so you can focus on developing an application.

## How should I use the documentation?

If you are getting started with the library, you should follow the documentation in order by pressing the “Next” button at the bottom-right of every page.

You can also use the menu on the left to quickly skip over sections.