* walksymlinks is useless, os.walk got followlinks in 2.6
* tempdir is redundant with tempfile.TemporaryDirectory added in 3.2
* listdir(recursive=False) is just os.listdir (I guess recursive=True
is somewhat useful)
* zip_dir is *not* redundant with shutil.make_archive:
- zip_dir handles the archived root differently
- zip_dir sorts files, make_archive sorts directories
- make_archive explicitly adds entries for directories (including
empty), sorts directories, doesn't sort files; zip_dir sorts
files (including with a custom key function) but ignores directories
- zip_dir filters out a bunch of trash files
closesodoo/odoo#39573
Signed-off-by: Christophe Simonis <chs@odoo.com>