Update Lib/test/test_syntax.py

Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>

Author: pablogsal

Lib/test/test_syntax.py

@@ -2063,11 +2063,27 @@
 
 >>> with item,: pass
 Traceback (most recent call last):
-SyntaxError: single 'with' item has a trailing comma
+SyntaxError: the last 'with' item has a trailing comma
 
 >>> with item as x,: pass
 Traceback (most recent call last):
-SyntaxError: single 'with' item has a trailing comma
+SyntaxError: the last 'with' item has a trailing comma
+
+>>> with item1, item2,: pass
+Traceback (most recent call last):
+SyntaxError: the last 'with' item has a trailing comma
+
+>>> with item1 as x, item2,: pass
+Traceback (most recent call last):
+SyntaxError: the last 'with' item has a trailing comma
+
+>>> with item1 as x, item2 as y,: pass
+Traceback (most recent call last):
+SyntaxError: the last 'with' item has a trailing comma
+
+>>> with item1, item2 as y,: pass
+Traceback (most recent call last):
+SyntaxError: the last 'with' item has a trailing comma
 
 >>> import a from b
 Traceback (most recent call last):