Python Dependencies for Tesla Powerwall2

on 
Tesla Powerwall2
Since the Dec 2020 update OAUTH2 is mandatory for accessing the PW2 API even from the home network. This is part of Tesla move of all the APIs to cloud. 
https://pypi.org/project/tesla-powerwall/


Install
sudo apt update
sudo apt upgrade
python --version
sudo apt install python-virtualenv 
apt install python3-virtualenv
apt autoremove
sudo apt update
sudo apt upgrade
cd pw
.pw/bin/activate
pip install Flask
sudo apt update
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py
pip install tesla_powerwall
cat app.py
chmod a+x app.py

Try Service
sudo systemctl daemon-reload
sudo systemctl start pw.service
sudo systemctl status pw.service
journalctl -e -u pw

Files

/etc/systemd/system/pw.service
[Unit]
Description=PW2 web API
After=network.target
[Service]
User=root
WorkingDirectory=/root/pw
# ExecStart=/root/pw/app.py # Orginal worked on Armbian
# New Ubuntu LTS needed an explicit call to Python3.8 and the app.py
ExecStart=/root/pw/bin/python3.8 app.py
Restart=always
[Install]
WantedBy=multi-user.target

/root/pw/app.py
#!flask/bin/python
from flask import Flask, jsonify
from tesla_powerwall import Powerwall
from tesla_powerwall import User

app = Flask(__name__)




@app.route('/pw2-api/get_pw_stat', methods=['GET'])
def get_pw_stats():

	powerwall = Powerwall("192.168.0.209")
	powerwall.login("secret", "agentx@foo.bar")
	meters = powerwall.get_meters()
	pw_stats = {
	        'SoC'			: int(powerwall.get_charge()),
        	'SolarActive' 		: meters.solar.is_drawing_from(),
       		'BatteryPoweringHouse' 	: meters.battery.is_drawing_from(),
        	'GridInUse' 		: meters.site.is_drawing_from(),
        	'SolarPowerFlowkW' 	: meters.solar.get_power(),
        	'BatteryPowerFlowkW' 	: meters.battery.get_power(),
        	'GridPowerFlowkW'	: meters.site.get_power(),
        	'HousePowerUsekW'	: meters.load.get_power()
    	    }
        
	return jsonify({'pw_stats': pw_stats})
if __name__ == '__main__':
    app.run(host="0.0.0.0", port=5100, debug=True)