MTPyroger/docs/source/resources/ErrorHandling.rst
2018-12-29 13:37:13 +01:00

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Error Handling
==============
Errors are inevitable when working with the API, and they must be correctly handled with ``try..except`` blocks.
There are many errors that Telegram could return, but they all fall in one of these categories
(which are in turn children of the :obj:`pyrogram.Error` superclass)
- :obj:`303 - See Other <pyrogram.api.errors.SeeOther>`
- :obj:`400 - Bad Request <pyrogram.api.errors.BadRequest>`
- :obj:`401 - Unauthorized <pyrogram.api.errors.Unauthorized>`
- :obj:`403 - Forbidden <pyrogram.api.errors.Forbidden>`
- :obj:`406 - Not Acceptable <pyrogram.api.errors.NotAcceptable>`
- :obj:`420 - Flood <pyrogram.api.errors.Flood>`
- :obj:`500 - Internal Server Error <pyrogram.api.errors.InternalServerError>`
As stated above, there are really many (too many) errors, and in case Pyrogram does not know anything yet about a
specific one, it raises a special :obj:`520 Unknown Error <pyrogram.api.errors.UnknownError>` exception and logs it
in the ``unknown_errors.txt`` file. Users are invited to report these unknown errors; in later versions of Pyrogram
some kind of automatic error reporting module might be implemented.
Examples
--------
.. code-block:: python
from pyrogram.api.errors import (
BadRequest, Flood, InternalServerError,
SeeOther, Unauthorized, UnknownError
)
try:
...
except BadRequest:
pass
except Flood:
pass
except InternalServerError:
pass
except SeeOther:
pass
except Unauthorized:
pass
except UnknownError:
pass
Exception objects may also contain some informative values.
E.g.: :obj:`FloodWait <pyrogram.api.errors.exceptions.flood_420.FloodWait>` holds the amount of seconds you have to wait
before you can try again. The value is always stored in the ``x`` field of the returned exception object:
.. code-block:: python
import time
from pyrogram.api.errors import FloodWait
try:
...
except FloodWait as e:
time.sleep(e.x)