2 files changed, 25 insertions, 3 deletions
diff --git a/testing/mozbase/mozfile/mozfile/mozfile.py b/testing/mozbase/mozfile/mozfile/mozfile.py
index 1f4ffa74af..20d56fe4b2 100644
--- a/testing/mozbase/mozfile/mozfile/mozfile.py
+++ b/testing/mozbase/mozfile/mozfile/mozfile.py
@@ -22,6 +22,7 @@ __all__ = [
     "extract",
     "is_url",
     "load",
+    "load_source",
     "copy_contents",
     "match",
     "move",
@@ -629,6 +630,19 @@ def load(resource):
     return urllib.request.urlopen(resource)
 
 
+# see https://docs.python.org/3/whatsnew/3.12.html#imp
+def load_source(modname, filename):
+    import importlib.machinery
+    import importlib.util
+
+    loader = importlib.machinery.SourceFileLoader(modname, filename)
+    spec = importlib.util.spec_from_file_location(modname, filename, loader=loader)
+    module = importlib.util.module_from_spec(spec)
+    sys.modules[module.__name__] = module
+    loader.exec_module(module)
+    return module
+
+
 # We can't depend on mozpack.path here, so copy the 'match' function over.
 
 re_cache = {}
diff --git a/testing/mozbase/mozprofile/mozprofile/prefs.py b/testing/mozbase/mozprofile/mozprofile/prefs.py
index 6c3b1173c8..b84d531f23 100644
--- a/testing/mozbase/mozprofile/mozprofile/prefs.py
+++ b/testing/mozbase/mozprofile/mozprofile/prefs.py
@@ -12,7 +12,15 @@ import tokenize
 import mozfile
 import six
 from six import StringIO, string_types
-from six.moves.configparser import SafeConfigParser as ConfigParser
+
+try:
+    from six.moves.configparser import SafeConfigParser as ConfigParser
+except ImportError:  # SafeConfigParser was removed in 3.12
+    from configparser import ConfigParser
+try:
+    ConfigParser.read_file
+except AttributeError:  # read_file was added in 3.2, readfp removed in 3.12
+    ConfigParser.read_file = ConfigParser.readfp
 
 if six.PY3:
 
@@ -24,7 +32,7 @@ __all__ = ("PreferencesReadError", "Preferences")
 
 
 class PreferencesReadError(Exception):
-    """read error for prefrences files"""
+    """read error for preferences files"""
 
 
 class Preferences(object):
@@ -124,7 +132,7 @@ class Preferences(object):
 
         parser = ConfigParser()
         parser.optionxform = str
-        parser.readfp(mozfile.load(path))
+        parser.read_file(mozfile.load(path))
 
         if section:
             if section not in parser.sections():