[PATCH v2 0/6] Python: delint python library

[John Snow]

gitlab CI: https://gitlab.com/jsnow/qemu/-/pipelines/304224309
branch: https://gitlab.com/jsnow/qemu/-/commits/python-package-pre-cleanup

This series serves as a pre-requisite for packaging the python series
and getting the linters running via CI. The first patch fixes a linter
error we've had for a while now; the subsequent ones fix a new warning
that was recently added to pylint 2.8.x.

V2:
 - iotest bits already handled, dropped here.
 - Changed patch #3 based on feedback from Wainer.

John Snow (6):
  python/console_socket: avoid one-letter variable
  python/machine: use subprocess.DEVNULL instead of
    open(os.path.devnull)
  python/machine: use subprocess.run instead of subprocess.Popen
  python/console_socket: Add a pylint ignore
  python/machine: Disable pylint warning for open() in _pre_launch
  python/machine: disable warning for Popen in _launch()

 python/qemu/console_socket.py | 11 ++++++-----
 python/qemu/machine.py        | 28 ++++++++++++++++++----------
 2 files changed, 24 insertions(+), 15 deletions(-)

-- 
2.30.2