Ensure that early = are not matched by the parser as invalid comparisons (GH-25375)
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 78b11c9..0e6942f 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -863,6 +863,11 @@
Traceback (most recent call last):
SyntaxError: cannot assign to attribute here. Maybe you meant '==' instead of '='?
+Ensure that early = are not matched by the parser as invalid comparisons
+ >>> f(2, 4, x=34); {1,2 a}
+ Traceback (most recent call last):
+ SyntaxError: invalid syntax
+
Make sure that the old "raise X, Y[, Z]" form is gone:
>>> raise X, Y
Traceback (most recent call last):