Python version support
Python SDK versions 5.0.0 and higher no longer support Python v2.7 and the Twisted and Tornado frameworks. If you require support for any of these, use SDK version 4.8.1.
Note that PubNub will stop supporting versions of Python lower than 3.7 by the end of 2021.
NOTICE: Based on current web trends and our own usage data, PubNub's Python Twisted SDK is deprecated as of May 1, 2019. Deprecation means we will no longer be updating the Python Twisted SDK but will continue to support users currently using it. Please feel free to use our other Python SDK offerings as they will continue to be supported and maintained. If you would like to use the Python Twisted SDK specifically, we would love to work with you on keeping this project alive!
How to enable logging
import pubnub import logging pubnub.set_stream_logger('pubnub', logging.DEBUG)
How to find the version of your SDK
from pubnub import PubNubTwisted PubNubTwisted.SDK_VERSION
Error handling with deferred()
In case of
deferred() calls, you should add error callback via
addErrback to returned deferred. Errors that will be passed to given errback will wrapped out by either
PubNubTwistedException which both implement two object fields:
- e.result - a request result object in case of success, otherwise
- e.status -
PNStatusobject with useful information about the finished request. You may check if it was an error or a success using
def publish(): def succ(envelope): print(str(envelope.result)) def errback(error): print("Error %s" % str(e)) print("Error category #%d" % e.status.category) pubnub.publish().channel("my_channel").message("hello!").deferred().addCallback(succ).addErrback(errback)