BaseRequest¶
- class telegram.request.BaseRequest[source]¶
Bases:
contextlib.AbstractAsyncContextManager
,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()
Use In
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 overrideparse_json_payload()
and implement custom logic to encode the keys oftelegram.request.RequestData.parameters
.See also
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()
anddo_request()
.Example
When calling
request.post(url)
,request
should use the default timeouts set on initialization. When callingrequest.post(url, connect_timeout=5, read_timeout=None)
,request
should use5
for the connect timeout andNone
for the read timeout.Use
if parameter is (not) BaseRequest.DEFAULT_NONE:
to check if the parameter was set.- Type:
- USER_AGENT = 'python-telegram-bot v21.7 (https://python-telegram-bot.org)'[source]¶
A description that can be used as user agent for requests made to the Bot API.
- Type:
- 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()
andretrieve()
. It should not be called manually.- Parameters:
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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_NONE
.
- Returns:
The HTTP return code & the payload part of the server response.
- Return type:
- 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()
anderrors="replace"
inbytes.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:
- 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:
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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_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.
- 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:
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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_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 toDEFAULT_NONE
.
- Returns:
The files contents.
- Return type: