mkdir temp
cd temp
virtualenv venv
source venv/bin/activate
pip install flake8-docstrings

mkdir inhouse_python_packages
cd inhouse_python_packages
mkdir clean_print
touch clean_print/clean_print.py
touch clean_print/__init__.py
touch setup.py

Mostly good, I think there are still some non-conform bits but it might just be that my config is stricter.
You could install more plugins like flake8-docstrings pep8-naming flake8-import-order if you want your code to be more standard (but it's not required within XC).

Too many small functions in my opinion, I feel like some of them might not be necessary. For example

def accuracy(predictions, labels):
    return float(np.sum(predictions == labels)) / labels.shape[0]

To be able to boot clean Armbian mainline based u-boot / kernel experiences, you need to remove incompatible Petitboot loader that is shipped with the board. From the Petitboot, go for “Exit to shell” and these commands to remove the Petitboot:

# flash_eraseall /dev/mtd0
# flash_eraseall /dev/mtd1
# flash_eraseall /dev/mtd2
# flash_eraseall /dev/mtd3

On arch: set the systemd.unified_cgroup_hierarchy=false kernel parameter.

Cleanup just in case (if needed, might want to be careful if there is a pre-existing installation).

sudo rm -r /var/lib/ipa-data
docker stop ipa-container
docker rm ipa-container
sudo mkdir /var/lib/ipa-data

loadkeys jp106
Check if in efi mode: ls /sys/firmware/efi/efivars (should execute without error)
timedatectl set-ntp true

List devices: fdisk -l
fdisk /dev/sda (or whichever device is to be used)