PreCheckoutQueryHandler¶
- class telegram.ext.PreCheckoutQueryHandler(callback, block=True)[source]¶
Bases:
telegram.ext.BaseHandler
BaseHandler 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.Available In
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
.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