Updates to the with-statement:
- New semantics for __exit__() -- it must re-raise the exception
if type is not None; the with-statement itself doesn't do this.
(See the updated PEP for motivation.)
- Added context managers to:
- file
- thread.LockType
- threading.{Lock,RLock,Condition,Semaphore,BoundedSemaphore}
- decimal.Context
- Added contextlib.py, which defines @contextmanager, nested(), closing().
- Unit tests all around; bot no docs yet.
diff --git a/Python/errors.c b/Python/errors.c
index cbcc6fa..c33bd13 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -24,6 +24,7 @@
if (traceback != NULL && !PyTraceBack_Check(traceback)) {
/* XXX Should never happen -- fatal error instead? */
+ /* Well, it could be None. */
Py_DECREF(traceback);
traceback = NULL;
}