Use non-capturing group inside RegExp

Cito · Cito · commit 5183ae778954 · 2019-04-29T14:53:41.000+02:00
Replicates graphql/graphql-js@9dc9a56
diff --git a/graphql/utilities/ast_from_value.py b/graphql/utilities/ast_from_value.py
@@ -30,7 +30,7 @@
 
 __all__ = ["ast_from_value"]
 
-_re_integer_string = re.compile("^-?(0|[1-9][0-9]*)$")
+_re_integer_string = re.compile("^-?(?:0|[1-9][0-9]*)$")
 
 
 def ast_from_value(value: Any, type_: GraphQLInputType) -> Optional[ValueNode]:
