Adding python modules within BalenaOS on RPi4

Product support balenaOS
1

Hello there!

I get the error message below when I try to push my code to my RPi4 running the balenaOS.

[Album] Imgur

I’m assuming it’s because the python on balenaOS doesn’t have the module I need (RPi.GPIO), so my question is how do I install / add python modules on it?

Kind regards,
Carl

2

Hi,

You should install the module in your Dockerfile and as you’re using Python so I assume pip is installed. Can you please add something like RUN pip install RPi.GPIO to you Dockerfile and try again?

5

Hey, thanks for the reply!

I’ve tried to change the dockerfile but I’m still getting an error when I try to push code on the Pi. I tried to push RPi.GPIO by itself but pip requires gcc, so I tried to push both gcc and RPi.GPIO and gcc installs fine, however it still doesn’t recognize the gcc command when trying to pip install RPi.GPIO. Is there perhaps a solution around this?

Here’s the error message when trying to push with balena:

[Album] Imgur

And here is my docker file:

[Album] Imgur

Update

I managed to get balena to push everything by switching from gcc to build-essential!

Now the issue is the logs still show that RPi.GPIO can’t be imported because it doesn’t exist. Also I can’t seem to find python anywhere using the host OS terminal.

Update 2

Everything works! I didn’t realize python defaulted to the same folder the project was in where I had some leftover RPi modules, so once I deleted them it worked out clean.

Thanks again, I didn’t even know what docker files were before your reply!

6

Glad you sorted it out :slight_smile: