bpo-44273: Improve syntax error message for assigning to "..." (GH-26477)

Use "ellipsis" instead of "Ellipsis" in syntax error messages to eliminate confusion with built-in variable Ellipsis.

diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index cc189ef0f54b52a921208e6fc26fcb9484c8d4b9..c000028e5f1aaa0e3ada519f70b442dbfaf7fb1f 100644 (file)
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -93,7 +93,7 @@ SyntaxError: cannot assign to literal here. Maybe you meant '==' instead of '='?
 
 >>> ... = 1
 Traceback (most recent call last):
-SyntaxError: cannot assign to Ellipsis here. Maybe you meant '==' instead of '='?
+SyntaxError: cannot assign to ellipsis here. Maybe you meant '==' instead of '='?
 
 >>> `1` = 1
 Traceback (most recent call last):

diff --git a/Parser/pegen.c b/Parser/pegen.c
index 548a64788dec4b86072d296e10706db7745d3c48..aac7e368a799f80d40ed02427c7fa18188f1cf27 100644 (file)
--- a/Parser/pegen.c
+++ b/Parser/pegen.c
@@ -217,7 +217,7 @@ _PyPegen_get_expr_name(expr_ty e)
                 return "True";
             }
             if (value == Py_Ellipsis) {
-                return "Ellipsis";
+                return "ellipsis";
             }
             return "literal";
         }