Subscribing to Topics Using the Python MQTT Client

We look at the subscribe process and examples of successful and unsuccessful subscription using a simple python demo script.
We look at the mid values and how then can be used to track subscripts. We also look success and failure codes.
The documentation for the client is here:

Other videos and Tutorials

Introduction to MQTT
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How to Use the Paho Python MQTT Client for Beginners
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Publish and Subscribe to a Cloudmqtt Broker
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Python MQTT Client The Loop and Callbacks explained

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[ranjitha.ghiremath]

Hello Steve, how to make threads to read each topic data when we subscribe to topic using wildcrafts

[kishanbhinde]

Is there any way to get how many clients are connected and also information of connected clients?

[AnkurKumar-yrgc]

Hi steve can u add the link to the document u are referring to at 10:32.

[shashipreethampreethamr]

It would be great if the Script is some where in the git, need to re code by watching the video

[vvkkumar]

Hi Steve, its a great tutorial. In this video i didnt get where client.connected_flag and check_subs() is defined?

[vvkkumar]

Hi Steve, do you have any idea why i am getting this error . File "C:\Program Files\Python37\lib\socket.py", line 716, in create_connection
sock.connect(sa)
TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

[TheLedreppe]

Hey there, it's me (the one who asked the question on your website)!
I'm not understanding how this function fits in (where it's called from) with the code that's not in the video:

def on_subscribe(client, userdata, mid, granted_qos):

I don't see it in the video code listing, so I assume (as you said) it relates to code that wasn't strictly needed to demonstrate comparing mid arguments?

[AnkurKumar-urng]

Could u upload the complete code for the above mentioned example . Great video just cannot implement it since the complete code is not there.

[haarishk]

+steve how to send message or data from one system to another system using mqtt protocol