Adjust imports for Python 3.11

sre_parse and sre_constants are deprecated in 3.11, see python/cpython#91308
lark-parser · Apr 26, 2022 · 1b62465 · 1b62465
1 parent 8a77e42
commit 1b62465
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/lark/utils.py b/lark/utils.py
@@ -113,8 +113,13 @@ def deserialize(cls, data, namespace, memo):
 except ImportError:
     regex = None
 
-import sre_parse
-import sre_constants
+try:  # Python 3.11
+    import re._parser as sre_parse
+    import re._constants as sre_constants
+except ImportError:
+    import sre_parse
+    import sre_constants
+
 categ_pattern = re.compile(r'\\p{[A-Za-z_]+}')
 
 def get_regexp_width(expr):