[Python-modules-team] Bug#896343: python3-networkmanager: NetworkManager fails to import

[Helmut Grohne]

Package: python3-networkmanager
Version: 2.0.1-4
Severity: serious
User: helmutg at debian.org
Usertags: python-import

After installing python3-networkmanager importing the module NetworkManager
into a python interpreter fails with the following error:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/NetworkManager.py", line 99, in <module>
    init_bus = dbus.SystemBus(private=True)
  File "/usr/lib/python3/dist-packages/dbus/_dbus.py", line 194, in __new__
    private=private)
  File "/usr/lib/python3/dist-packages/dbus/_dbus.py", line 100, in __new__
    bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
  File "/usr/lib/python3/dist-packages/dbus/bus.py", line 122, in __new__
    bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.FileNotFound: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory

The vast majority of import failures is attributed to missing dependencies.
Often times that manifests as an ImportError or ModuleNotFoundError.
Typically, dependencies should be inserted by dh-python via ${python:Depends}
or ${python3:Depends}. Thus a missing dependency can be caused by incomplete
install_requires in setup.py. Sometimes a missing dependency of a dependency
is the cause, in such cases this bug should be reassigned.

Helmut