bpo-44168: Fix error message in the parser for keyword arguments for invalid expressions (GH-26210) (GH-26247)
(cherry picked from commit 33c0c90dea06fda1df99482521559ebef7210bea)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
diff --git a/Grammar/python.gram b/Grammar/python.gram
index 6b815ab..9a53fe0 100644
--- a/Grammar/python.gram
+++ b/Grammar/python.gram
@@ -843,7 +843,7 @@
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, asdl_seq_GET(b, b->size-1)->target, "Generator expression must be parenthesized") }
| a=args ',' args { _PyPegen_arguments_parsing_error(p, a) }
invalid_kwarg:
- | a=expression b='=' {
+ | !(NAME '=') a=expression b='=' {
RAISE_SYNTAX_ERROR_KNOWN_RANGE(
a, b, "expression cannot contain assignment, perhaps you meant \"==\"?") }