From sensors -u commandline to json output

sensors2json.py

#!/usr/bin/env python

import json
import sys
import yaml


class Device:
    def __init__(self, device_id, adapter, *args):
        self.device_id = device_id
        self.adapter = adapter.split(': ', 1)[1].strip()
        self.sensors = self.parse_sensors(*args)

    def parse_sensors(self, *args):
        sensors = {}
        datas = yaml.load("\n".join(args))
        for sensor_id, sensor_params in datas.items():
            sensors[sensor_id] = self.parse_sensor(sensor_params)
        return sensors

    def parse_sensor(self, params):
        sensor = {}
        sensor['tags'] = []
        for k, sensor_value in params.items():
            [sensor_type, sensor_name] = k.split('_', 1)
            for t in ['temp', 'power']:
                if sensor_type.startswith(t):
                    sensor_type = t
                    if not t in sensor['tags']:
                        sensor['tags'].append(t)
                    sensor[sensor_name] = sensor_value
        return sensor


def push_device(devices, buffer):
    devices.append(Device(buffer.pop(0), buffer.pop(0), *buffer))


devices = []
buffer = []

for row in sys.stdin:
    line = row.rstrip()
    if len(line) > 0:
        buffer.append(line)
    else:
        push_device(devices, buffer)
        buffer = []

if len(buffer) > 0:
    push_device(devices, buffer)

export = {}
for d in devices:
    export[d.device_id] = {
        'device_id': d.device_id,
        'adapter': d.adapter,
        'sensors': d.sensors
    }

print(json.dumps(export))