Nick80835 b9aafa3441 Fix IOError with some image modes in photo resize
This fixes image compression with mode "P" (potentially others) which is necessary as the server has erroneous alpha color with some types of images (mode "P" for example). This also properly applies the background argument that may be passed to _resize_photo_if_needed by always compressing images with alpha regardless of whether the server will compress the image for us.
2025-01-13 20:37:36 +01:00
2024-11-17 22:32:16 +01:00
2021-01-14 22:56:55 +01:00
2021-02-12 17:56:46 +01:00
2018-06-26 10:12:00 +02:00
2023-12-01 20:30:19 +01:00

Telethon
========
.. epigraph::

  ⭐️ Thanks **everyone** who has starred the project, it means a lot!

|logo| **Telethon** is an asyncio_ **Python 3**
MTProto_ library to interact with Telegram_'s API
as a user or through a bot account (bot API alternative).

.. important::

    If you have code using Telethon before its 1.0 version, you must
    read `Compatibility and Convenience`_ to learn how to migrate.
    As with any third-party library for Telegram, be careful not to
    break `Telegram's ToS`_ or `Telegram can ban the account`_.

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.


Installing
----------

.. code-block:: sh

  pip3 install telethon


Creating a client
-----------------

.. code-block:: python

    from telethon import TelegramClient, events, sync

    # These example values won't work. You must get your own api_id and
    # api_hash from https://my.telegram.org, under API Development.
    api_id = 12345
    api_hash = '0123456789abcdef0123456789abcdef'

    client = TelegramClient('session_name', api_id, api_hash)
    client.start()


Doing stuff
-----------

.. code-block:: python

    print(client.get_me().stringify())

    client.send_message('username', 'Hello! Talking to you from Telethon')
    client.send_file('username', '/home/myself/Pictures/holidays.jpg')

    client.download_profile_photo('me')
    messages = client.get_messages('username')
    messages[0].download_media()

    @client.on(events.NewMessage(pattern='(?i)hi|hello'))
    async def handler(event):
        await event.respond('Hey!')


Next steps
----------

Do you like how Telethon looks? Check out `Read The Docs`_ for a more
in-depth explanation, with examples, troubleshooting issues, and more
useful information.

.. _asyncio: https://docs.python.org/3/library/asyncio.html
.. _MTProto: https://core.telegram.org/mtproto
.. _Telegram: https://telegram.org
.. _Compatibility and Convenience: https://docs.telethon.dev/en/stable/misc/compatibility-and-convenience.html
.. _Telegram's ToS: https://core.telegram.org/api/terms
.. _Telegram can ban the account: https://docs.telethon.dev/en/stable/quick-references/faq.html#my-account-was-deleted-limited-when-using-the-library
.. _Read The Docs: https://docs.telethon.dev

.. |logo| image:: logo.svg
    :width: 24pt
    :height: 24pt
Description
Pure Python 3 MTProto API Telegram client library, for bots too!
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