How to get systemd service state via dbus in python

get_systemd_services.py

#!/usr/bin/env python3

from dataclasses import dataclass
from enum import Enum
from typing import List

from pystemd.systemd1 import Manager

@dataclass
class ServiceActiveState(str, Enum):
    active: str = 'active'
    reloading: str = 'reloading'
    inactive: str = 'inactive'
    failed: str = 'failed'
    activating: str = 'activating'
    deactivating: str = 'deactivating'

@dataclass
class Unit:
    # Based on ListUnits() from:
    # https://www.freedesktop.org/software/systemd/man/org.freedesktop.systemd1.html
    name: str
    description: str
    load_state: str
    active_state: ServiceActiveState
    sub_state: str
    follower: str
    object_path: str
    job_id: int
    job_type: str
    job_object_path: str

    def __lt__(self, other: 'Unit') -> bool:
        return self.name < other.name

    def __str__(self):
        return f'{self.name}\n\t{repr(self)}'

with Manager() as manager:
    manager.load()

    x = [ tuple(element.decode('utf-8') if isinstance(element, bytes) else element for element in unit) for unit in manager.ListUnits() ]

    for unit in x:
        print(Unit(*unit))
        print()