misc: use importlib to load (auquotidien) extension module (#46991)

wcs/qommon/publisher.py

@@ -24,7 +24,7 @@ from django.utils.six.moves import cPickle
 from django.utils.six.moves.urllib import parse as urllib
 import datetime
 from decimal import Decimal
-import imp
+import importlib
 import inspect
 import os
 import fcntl
@@ -706,13 +706,12 @@ class QommonPublisher(Publisher, object):
                 if not filename.endswith('.py'):
                     continue
                 modulename = filename[:-3]
-                fp, pathname, description = imp.find_module(modulename, [extra_dir])
+                spec = importlib.util.spec_from_file_location(modulename, os.path.join(extra_dir, filename))
+                module = importlib.util.module_from_spec(spec)
                 try:
-                    imp.load_module(modulename, fp, pathname, description)
+                    spec.loader.exec_module(module)
                 except Exception as e:
                     print('failed to load extra module: %s (%s)' % (modulename, e), file=sys.stderr)
-                    if fp:
-                        fp.close()
 
     translation_domains = None
     @classmethod