fix: sre_constants import because of deprecation (#2139)

valentynbez · johanneskoester · web-flow · commit 3b326dba22ef · 2023-03-01T22:12:28.000+01:00
- `sre_constants` is deprecated, the import statement was updated accordingly ### Description The `re` module sources are being reorganized, see more information: python/cpython#91308 Small fix accommodates changes for all python versions. Co-authored-by: Johannes Köster <johannes.koester@tu-dortmund.de>
diff --git a/snakemake/rules.py b/snakemake/rules.py
@@ -11,13 +11,17 @@
 from snakemake.path_modifier import PATH_MODIFIER_FLAG
 import sys
 import inspect
-import sre_constants
 import collections
 from urllib.parse import urljoin
 from pathlib import Path
 from itertools import chain
 from functools import partial
 
+try:
+    import re._constants as sre_constants
+except ImportError:  # python < 3.11
+    import sre_constants
+
 from snakemake.io import (
     IOFile,
     _IOFile,
