PreCheckoutQueryHandler¶
- class telegram.ext.PreCheckoutQueryHandler(callback, block=True, pattern=None)[source]¶
Bases:
telegram.ext.BaseHandler
Handler class to handle Telegram
telegram.Update.pre_checkout_query
.Warning
When setting
block
toFalse
, you cannot rely on adding custom attributes totelegram.ext.CallbackContext
. See its docs for more info.Examples
- Parameters:
callback (coroutine function) –
The callback function for this handler. Will be called when
check_update()
has determined that an update should be processed by this handler. Callback signature:async def callback(update: Update, context: CallbackContext)
The return value of the callback is usually ignored except for the special case of
telegram.ext.ConversationHandler
.block (
bool
, optional) –Determines whether the return value of the callback should be awaited before processing the next handler in
telegram.ext.Application.process_update()
. Defaults toTrue
.See also
pattern (
str
|re.Pattern
, optional) –Optional. Regex pattern to test
telegram.PreCheckoutQuery.invoice_payload
against.Added in version 20.8.
- pattern[source]¶
Optional. Regex pattern to test
telegram.PreCheckoutQuery.invoice_payload
against.Added in version 20.8.
- Type:
str
|re.Pattern
, optional
Available In
- check_update(update)[source]¶
Determines whether an update should be passed to this handler’s
callback
.- Parameters:
update (
telegram.Update
|object
) – Incoming update.- Returns:
bool