Exceptions raised in the child process, before the new program has started to
execute, will be re-raised in the parent. Additionally, the exception object
will have one extra attribute called :attr:`child_traceback`, which is a string
-containing traceback information from the childs point of view.
+containing traceback information from the child's point of view.
The most common exception raised is :exc:`OSError`. This occurs, for example,
when trying to execute a non-existent file. Applications should prepare for