Python version

[guysqr]

Hi there, thanks for this guide. I've installed python 3.7 following your instructions but on my Pi python 2.7 is the default and 3.4 is also installed and usable as /usr/bin/python3. Is there a reason for requiring 3.7? The default script that the node-red sensehat plugin invokes specifies python 2.7 because it invokes it via

COMMAND=/usr/bin/python -u /home/pi/.node-red/node_modules/node-red-node-pi-sense-hat/sensehat.py

I have tried changing my default python version (using this guide https://raspberry-valley.azurewebsites.net/Python-Default-Version/) and that lets the script run under default python 3.4, which works but doesn't seem to perform any differently to python 2.7.

I was hoping that switching to python3 would address the issues I am seeing with the sense-hat stopping streaming data when I move it - it seems like the movement causes it to choke and only once the movement stops does the sense-hat blurt out the change events. Any ideas? Is python 3.7 going to address that issue? Or am I wasting my time upgrading my Pi to use it and I'll still be at square one?

Thanks again

[mpolinowski]

hey @guysqr,

tbh I did not spend much time thinking about the Python version - I had to reset my Pi (v3) and picked the new Buster minimal image from Raspbian for it - just to give it a try. The SenseHAT Node names python v3.2, so I decided to try v3.7 instead and it worked right away.

I am not using the motion sensors myself - but I tested it just now and they are updating when I move the Pi. Actually, without smoothing those values, they keep fluctuating all the time:

But if the problem is related to your Python version, I can't say. But since there is a mention for version 3.2 in the official docs I don't assume that updating to v3.7 will solve the issue.