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67 lines
3.0 KiB
ReStructuredText
67 lines
3.0 KiB
ReStructuredText
The Full API
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============
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.. currentmodule:: telethon
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The API surface offered by Telethon is not exhaustive.
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Telegram is constantly adding new features, and both implementing and documenting custom methods would an exhausting, never-ending job.
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Telethon concedes to this fact and implements only commonly-used features to keep a lean API.
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Access to the entirity of Telegram's API via Telethon's :term:`Raw API` is a necessary evil.
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The ``telethon._tl`` module has a leading underscore to signal that it is private.
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It is not covered by the `semver <https://semver.org/>`_ guarantees of the library, but you may need to use it regardless.
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If the :class:`Client` doesn't offer a method for what you need, using the :term:`Raw API` is inevitable.
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Invoking Raw API methods
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------------------------
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The :term:`Raw API` can be *invoked* in a very similar way to other client methods:
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.. code-block:: python
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from telethon import _tl as tl
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was_reset = await client(tl.functions.account.reset_wall_papers())
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Inside ``telethon._tl.functions`` you will find a function for every single :term:`RPC` supported by Telegram.
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The parameters are keyword-only and do not have defaults.
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Whatever arguments you pass is exactly what Telegram will receive.
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Whatever is returned is exactly what Telegram responded with.
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All functions inside ``telethon._tl.functions`` will return the serialized request.
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When calling a :class:`Client` instance with this request as input, it will be sent to Telegram and wait for a response.
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Multiple requests may be in-flight at the same time, specially when using :mod:`asyncio`.
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Telethon will attempt to combine these into a single "container" when possible as an optimization.
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Exploring the Raw API
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---------------------
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Everything under ``telethon._tl.types`` implements :func:`repr`.
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This means you can print any response and get the Python representation of that object.
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All types are proper classes with attributes.
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You do not need to use a regular expression on the string representation to access the field you want.
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Most :term:`RPC` return an abstract class from ``telethon._tl.abcs``.
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To check for a concrete type, you can use :func:`isinstance`:
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.. code-block:: python
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invite = await client(tl.functions.messages.check_chat_invite(hash='aBcDeF'))
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if isinstance(invite, tl.types.ChatInviteAlready):
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print(invite.chat)
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The ``telethon._tl`` module is not documented here because it would greatly bloat the documentation and make search harder.
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Instead, there are multiple alternatives:
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* Use Telethon's separate site to search in the `Telethon Raw API <https://tl.telethon.dev/>`_.
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This is the recommended way. It also features auto-generated examples.
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* Use Python's built-in :func:`help` and :func:`dir` to help you navigate the module.
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* Use an editor with autocompletion support.
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* Choose the right layer from `Telegram's official API Layers <https://core.telegram.org/api/layers>`_.
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Note that the `TL Schema <https://core.telegram.org/schema>`_ might not be up-to-date.
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