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+## Contact support@pubnub.com for all questions
+
+#### [PubNub](http://www.pubnub.com) Real-time Data Network
+##### Standalone Python Migration
+
+#### 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:
+info = pubnub.publish({
+    'channel' : channel,
+    'message' : message
+})
+print(info)
+
+# 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:
+# Listen for Messages *BLOCKING*
+def receive(message) :
+    print(message)
+    return True
+
+pubnub.subscribe({
+    'channel'  : channel,
+    'callback' : receive 
+})
+
+
+# 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+
+
+pubnub.unsubscribe(channel='hello_world')
+```
+
+#### PRESENCE
+
+```
+
+
+channel = 'hello_world'
+
+# Pre 3.5:
+def pres_event(message) :
+    print(message)
+    return True
+
+pubnub.presence({
+    'channel'  : channel,
+    'callback' : receive 
+})
+
+
+# New in 3.5+
+
+# Listen for Presence Event Messages
+
+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:
+# Get info on who is here right now!
+
+here_now = pubnub.here_now({
+    'channel' : 'hello_world',
+})
+
+print(here_now['occupancy'])
+print(here_now['uuids'])
+
+
+# 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:
+# Load Previously Published Messages
+history = pubnub.detailedHistory({
+    'channel'   : 'my_channel',
+    'end'       : my_end_time_token, # Optional
+    'start'     : my_start_time_token, # Optional
+    'count'     : num_of_msgs_to_return # Optional, default is 100
+})
+print(history)
+
+# 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)
+```
+
+## Contact support@pubnub.com for all questions