Fix DeprecationWarning: module 'sre_parse' is deprecated

https://docs.python.org/3/whatsnew/3.11.html#modules

Replace deprecated sre_parse with re._parser.

Author: nzlosh

st2common/st2common/models/utils/action_alias_utils.py

@@ -1,4 +1,4 @@
-# Copyright 2020 The StackStorm Authors.
+# Copyright 2020-2026 The StackStorm Authors.
 # Copyright 2019 Extreme Networks, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -17,17 +17,29 @@
 
 import re
 import sys
+if sys.version_info >= (3, 11):
+    from re._parser import ( # pylint: disable=E0611
+        parse,
+        AT,
+        AT_BEGINNING,
+        AT_BEGINNING_STRING,
+        AT_END,
+        AT_END_STRING,
+        BRANCH,
+        SUBPATTERN,
+    )
+else:
+    from sre_parse import (  # pylint: disable=E0611
+        parse,
+        AT,
+        AT_BEGINNING,
+        AT_BEGINNING_STRING,
+        AT_END,
+        AT_END_STRING,
+        BRANCH,
+        SUBPATTERN,
+    )
 
-from sre_parse import (  # pylint: disable=E0611
-    parse,
-    AT,
-    AT_BEGINNING,
-    AT_BEGINNING_STRING,
-    AT_END,
-    AT_END_STRING,
-    BRANCH,
-    SUBPATTERN,
-)
 
 from st2common.util.jinja import render_values
 from st2common.constants import keyvalue as kv_constants
@@ -45,12 +57,7 @@
 
 LOG = log.getLogger(__name__)
 
-# Python 3 compatibility
-if sys.version_info > (3,):
-    SUBPATTERN_INDEX = 3
-else:
-    SUBPATTERN_INDEX = 1
-
+SUBPATTERN_INDEX = 3
 
 class ActionAliasFormatParser(object):
     def __init__(self, alias_format=None, param_stream=None):

st2common/tests/unit/test_action_alias_utils.py

@@ -1,4 +1,4 @@
-# Copyright 2020 The StackStorm Authors.
+# Copyright 2020-2026 The StackStorm Authors.
 # Copyright 2019 Extreme Networks, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,14 +14,26 @@
 # limitations under the License.
 
 from __future__ import absolute_import
-from sre_parse import (
-    parse,
-    AT,
-    AT_BEGINNING,
-    AT_BEGINNING_STRING,
-    AT_END,
-    AT_END_STRING,
-)
+
+import sys
+if sys.version_info >= (3, 11):
+    from re._parser import (
+        parse,
+        AT,
+        AT_BEGINNING,
+        AT_BEGINNING_STRING,
+        AT_END,
+        AT_END_STRING,
+    )
+else:
+    from sre_parse import (
+        parse,
+        AT,
+        AT_BEGINNING,
+        AT_BEGINNING_STRING,
+        AT_END,
+        AT_END_STRING,
+    )
 from mock import Mock
 from unittest import TestCase
 from st2common.exceptions.content import ParseException