Somewhere along the way, the softspace attr of file objects became read-
only. Repaired, and added new tests to test_file.py.
diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index 5b2267b..92cfa5b 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -1962,7 +1962,8 @@
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
- 0, /* tp_setattro */
+ /* softspace is writable: we must supply tp_setattro */
+ PyObject_GenericSetAttr, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
file_doc, /* tp_doc */