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| diff --git a/python/migration.md b/python/migration.md new file mode 100644 index 0000000..10d03ae --- /dev/null +++ b/python/migration.md @@ -0,0 +1,164 @@ +## PubNub 3.5.0 Web Data Push Cloud-hosted API - PYTHON +#### www.pubnub.com - PubNub Web Data Push Service in the Cloud.  +#### http://github.com/pubnub/python + + +#### Init + + + +``` + +# Pre 3.5: +# + +# New in 3.5+ +pubnub = Pubnub(publish_key="demo", subscribe_key="demo", ssl_on=False) + +``` + +#### PUBLISH + +``` +channel = 'hello_world' +message = 'Hello World !!!' + +# Pre 3.5: +# + +# New in 3.5+ + +# Synchronous usage +print pubnub.publish(channel='hello_world', message='Hello World !!!') + +# Asynchronous usage + +def callback(message): +    print(message) + +pubnub.publish(channel, message, callback=callback, error=callback) + +``` + + +#### SUBSCRIBE +Pre 3.5.x, subscribe was blocking and would only be terminated via a false return from the callback. In our latest version of the SDK, subscribe is asyncronous, and because of this, usage is a bit different, but the experience is more like our other async SDKs. + +``` + +# Listen for Messages + +channel = 'hello_world' + +# Pre 3.5: +# + +# New in 3.5+ + +def callback(message, channel): +    print(message) + + +def error(message): +    print("ERROR : " + str(message)) + + +def connect(message): +    print("CONNECTED") + + +def reconnect(message): +    print("RECONNECTED") + + +def disconnect(message): +    print("DISCONNECTED") + + +pubnub.subscribe(channel, callback=callback, error=callback, +                 connect=connect, reconnect=reconnect, disconnect=disconnect) +``` + +#### Unsubscribe +Once subscribed, you can easily, gracefully, unsubscribe: + +``` +# Pre 3.5: +# + +# New in 3.5+ + +Unsub example +``` + +#### PRESENCE + +``` + +# Pre 3.5: +# + +# New in 3.5+ + +# Listen for Presence Event Messages + +channel = 'hello_world' + +def callback(message, channel): +    print(message) + + +def error(message): +    print("ERROR : " + str(message)) + + + +pubnub.presence(channel, callback=callback, error=callback) +``` + +#### HERE_NOW + +``` + +# Pre 3.5: +# + +# New in 3.5+ + +# Get info on who is here right now! + +channel = 'hello_world' + +# Synchronous usage +print pubnub.here_now(channel) + + +# Asynchronous usage + +def callback(message): +    print(message) + +pubnub.here_now(channel, callback=callback, error=callback) +``` + +#### HISTORY + +``` + +# Pre 3.5: +# + +# New in 3.5+ + +# Synchronous usage + +print pubnub.history(channel, count=2) + +# Asynchronous usage + + +def callback(message): +    print(message) + +pubnub.history(channel, count=2, callback=callback, error=callback) +``` | 
