BaseRequest

class telegram.request.BaseRequest[source]

Bases: typing.AsyncContextManager, ABC

Abstract interface class that allows python-telegram-bot to make requests to the Bot API. Can be implemented via different asyncio HTTP libraries. An implementation of this class must implement all abstract methods and properties.

Instances of this class can be used as asyncio context managers, where

async with request_object:
    # code

is roughly equivalent to

try:
    await request_object.initialize()
    # code
finally:
    await request_object.shutdown()

See also

__aenter__() and __aexit__().

Tip

JSON encoding and decoding is done with the standard library’s json by default. To use a custom library for this, you can override parse_json_payload() and implement custom logic to encode the keys of telegram.request.RequestData.parameters.

Added in version 20.0.

DEFAULT_NONE = None[source]

A special object that indicates that an argument of a function was not explicitly passed. Used for the timeout parameters of post() and do_request().

Example

When calling request.post(url), request should use the default timeouts set on initialization. When calling request.post(url, connect_timeout=5, read_timeout=None), request should use 5 for the connect timeout and None for the read timeout.

Use if parameter is (not) BaseRequest.DEFAULT_NONE: to check if the parameter was set.

Type:

object

USER_AGENT = 'python-telegram-bot v21.2 (https://python-telegram-bot.org)'[source]

A description that can be used as user agent for requests made to the Bot API.

Type:

str

async __aenter__()[source]

Asynchronous context manager which initializes the Request.

Returns:

The initialized Request instance.

Raises:

Exception – If an exception is raised during initialization, shutdown() is called in this case.

async __aexit__(exc_type, exc_val, exc_tb)[source]

Asynchronous context manager which shuts down the Request.

abstract async do_request(url, method, request_data=None, read_timeout=None, write_timeout=None, connect_timeout=None, pool_timeout=None)[source]

Makes a request to the Bot API. Must be implemented by a subclass.

Warning

This method will be called by post() and retrieve(). It should not be called manually.

Parameters:
  • url (str) – The URL to request.

  • method (str) – HTTP method (i.e. 'POST', 'GET', etc.).

  • request_data (telegram.request.RequestData, optional) – An object containing information about parameters and files to upload for the request.

  • read_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a response from Telegram’s server instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • write_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a write operation to complete (in terms of a network socket; i.e. POSTing a request or uploading a file) instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • connect_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection attempt to a server to succeed instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • pool_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection to become available instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

Returns:

The HTTP return code & the payload part of the server response.

Return type:

Tuple[int, bytes]

abstract async initialize()[source]

Initialize resources used by this class. Must be implemented by a subclass.

static parse_json_payload(payload)[source]

Parse the JSON returned from Telegram.

Tip

By default, this method uses the standard library’s json.loads() and errors="replace" in bytes.decode(). You can override it to customize either of these behaviors.

Parameters:

payload (bytes) – The UTF-8 encoded JSON payload as returned by Telegram.

Returns:

A JSON parsed as Python dict with results.

Return type:

dict

Raises:

TelegramError – If loading the JSON data failed

final async post(url, request_data=None, read_timeout=None, write_timeout=None, connect_timeout=None, pool_timeout=None)[source]

Makes a request to the Bot API handles the return code and parses the answer.

Warning

This method will be called by the methods of telegram.Bot and should not be called manually.

Parameters:
  • url (str) – The URL to request.

  • request_data (telegram.request.RequestData, optional) – An object containing information about parameters and files to upload for the request.

  • read_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a response from Telegram’s server instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • write_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a write operation to complete (in terms of a network socket; i.e. POSTing a request or uploading a file) instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • connect_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection attempt to a server to succeed instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • pool_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection to become available instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

Returns:

The JSON response of the Bot API.

property read_timeout[source]

This property must return the default read timeout in seconds used by this class. More precisely, the returned value should be the one used when post.read_timeout of :meth:post` is not passed/equal to DEFAULT_NONE.

Added in version 20.7.

Warning

For now this property does not need to be implemented by subclasses and will raise NotImplementedError if accessed without being overridden. However, in future versions, this property will be abstract and must be implemented by subclasses.

Returns:

The read timeout in seconds.

Return type:

float | None

final async retrieve(url, read_timeout=None, write_timeout=None, connect_timeout=None, pool_timeout=None)[source]

Retrieve the contents of a file by its URL.

Warning

This method will be called by the methods of telegram.Bot and should not be called manually.

Parameters:
  • url (str) – The web location we want to retrieve.

  • read_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a response from Telegram’s server instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • write_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a write operation to complete (in terms of a network socket; i.e. POSTing a request or uploading a file) instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • connect_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection attempt to a server to succeed instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

  • pool_timeout (float | None, optional) – If passed, specifies the maximum amount of time (in seconds) to wait for a connection to become available instead of the time specified during creating of this object. Defaults to DEFAULT_NONE.

Returns:

The files contents.

Return type:

bytes

abstract async shutdown()[source]

Stop & clear resources used by this class. Must be implemented by a subclass.