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+## Contact support@pubnub.com for all questions
+
+#### [PubNub](http://www.pubnub.com) Real-time Data Network
+##### Tornado Migration
+
+#### Import
+
+```
+# Pre 3.5:
+from Pubnub import Pubnub
+
+# New in 3.5+
+from Pubnub import PubnubTornado as Pubnub
+
+```
+
+
+#### Init
+
+```
+
+# Pre 3.5:
+pubnub = Pubnub(
+    "demo",  ## PUBLISH_KEY
+    "demo",  ## SUBSCRIBE_KEY
+     False   ## SSL_ON?
+)
+
+# 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:
+def callback(messages):
+    print(messages)
+
+pubnub.publish( {
+    'channel'  : channel,
+    'message'    : message,
+    'callback' : callback
+})
+
+# New in 3.5+
+
+def callback(message):
+    print(message)
+
+pubnub.publish(channel, message, callback=callback, error=callback)
+
+```
+
+
+#### SUBSCRIBE
+
+```
+
+# Listen for Messages
+
+channel = 'hello_world'
+
+# Pre 3.5:
+def connected() :
+    print('CONNECTED')
+
+def message_received(message):
+    print(message)
+
+pubnub.subscribe({
+    'channel'  : channel,
+    'connect'  : connected,
+    'callback' : message_received
+})
+
+# 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:
+pubnub.unsubscribe({
+    'channel' : 'hello_world'
+})
+
+# New in 3.5+
+
+pubnub.unsubscribe(channel='hello_world')
+```
+
+#### 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
+
+```
+
+channel = 'hello_world'
+
+# Pre 3.5:
+def callback(messages):
+    print(messages)
+
+pubnub.here_now( {
+    'channel'  : channel,
+    'callback' : callback
+})
+
+
+# New in 3.5+
+
+# Get info on who is here right now!
+
+
+def callback(message):
+    print(message)
+
+pubnub.here_now(channel, callback=callback, error=callback)
+```
+
+#### HISTORY
+
+```
+channel = 'hello_world'
+
+# Pre 3.5:
+def history_complete(messages):
+    print(messages)
+
+pubnub.history( {
+    'channel'  : channel,
+    'limit'    : 2,
+    'callback' : history_complete
+})
+
+
+# New in 3.5+
+
+def callback(message):
+    print(message)
+
+pubnub.history(channel, count=2, callback=callback, error=callback)
+```
+
+#### IO Event Loop
+
+```
+
+# Pre 3.5:
+tornado.ioloop.IOLoop.instance().start()
+
+# New in 3.5+
+pubnub.start()
+```
+## Contact support@pubnub.com for all questions