PEP 308 implementation, including minor refdocs and some testcases. It breaks the parser module, because it adds the if/else construct as well as two new grammar rules for backward compatibility. If no one else fixes parsermodule, I guess I'll go ahead and fix it later this week. The TeX code was checked with texcheck.py, but not rendered. There is actually a slight incompatibility: >>> (x for x in lambda:0) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: iteration over non-sequence changes into >>> (x for x in lambda: 0) File "<stdin>", line 1 (x for x in lambda: 0) ^ SyntaxError: invalid syntax Since there's no way the former version can be useful, it's probably a bugfix ;)

--- a/Python/symtable.c	Mon Feb 27 00:09:50 2006 +0000
+++ b/Python/symtable.c	Mon Feb 27 00:24:13 2006 +0000
@@ -1084,6 +1084,11 @@
 			return 0;
 		break;
 	}
+	case IfExp_kind:
+		VISIT(st, expr, e->v.IfExp.test);
+		VISIT(st, expr, e->v.IfExp.body);
+		VISIT(st, expr, e->v.IfExp.orelse);
+		break;
         case Dict_kind:
 		VISIT_SEQ(st, expr, e->v.Dict.keys);
 		VISIT_SEQ(st, expr, e->v.Dict.values);