Hands-On MQTT Programming with Python

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

@staticmethod    def on_subscribe(client, userdata, mid, granted_qos):        print("I've subscribed with QoS: {}".format(            granted_qos[0]))

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

 time.sleep(0.5) 
       client.disconnect() 
       client.loop_stop() 

Any command-line input or output is written as follows: ...