1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
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)
```
|
