Utility Methods API for PubNub Python SDK
The methods on this page are utility methods that don't fit into other categories.
Time
Description
This function will return a 17 digit precision Unix epoch.
Algorithm constructing the timetoken
timetoken = (Unix epoch time in seconds) * 10000000
Example of creating a timetoken for a specific time and date:
08/19/2013 @ 9:20pm in UTC = 1376961606
timetoken = 1376961606 * 10000000
timetoken = 13769616060000000
Method(s)
To fetch Time you can use the following method(s) in Python SDK:
pubnub.time()
Basic Usage
Get PubNub Timetoken
envelope = pubnub.time().sync()
Returns
The time() operation returns a PNTimeResponse which contains the following operations:
| Method | Type | Description |
|---|---|---|
int | Int | Returns an int representation of current timetoken. |
str | String | Returns a str representation of current timetoken. |
date_time | Date | Returns a date representation of current timetoken. |
Do not confuse with timestamp() method, which is a shortcut to int(time.time())
Get Subscribed Channels
Description
Returns all the subscribed channels in a list.
Method(s)
To Get Subscribed Channels you can use the following method(s) in the Python SDK:
pubnub.get_subscribed_channels()
Basic Usage
Get Subscribed Channels
channels = pubnub.get_subscribed_channels()
Returns
List
["my_ch1", "my_ch2"]
Get Subscribed Channel Groups
Description
Returns all the subscribed channel groups in a list.
Method(s)
To Get Subscribe Channel Groups you can use the following method(s) in the Python SDK:
pubnub.get_subscribed_channel_groups()
Basic Usage
Get Subscribed Channel Groups
channels = pubnub.get_subscribed_channel_groups()
Returns
List
["my_group1", "my_group2"]
Encrypt
Description
This function allows to encrypt the data.
Method(s)
To encrypt the data you can use the following method(s) in Python SDK.
pubnub.encrypt(cipher_key, file)
| Parameter | Type | Required | Description |
|---|---|---|---|
file | bytes | Yes | The file to encrypt. |
cipher_key | String | Optional | Cipher key used for encryption. If it's not provided, the cipher key from config is used. |
Basic Usage
payload_to_encrypt = b'knights_who_say_ni'
encrypted_payload = pubnub.encrypt("test_cipher_key", payload_to_encrypt)
Returns
Bytes object with encrypted data.
Decrypt
Description
This function allows to decrypt the data.
Method(s)
To decrypt the data you can use the following method(s) in Python SDK.
pubnub.decrypt(cipher_key, file)
| Parameter | Type | Required | Description |
|---|---|---|---|
file | bytes | Yes | The file to decrypt. |
cipher_key | String | Optional | Cipher key used for encryption. If it's not provided, the cipher key from config is used. |
Basic Usage
decrypted_payload = pubnub.decrypt(cipher_key, payload_to_decrypt_in_bytes)
Returns
Bytes object with decrypted data.