[Python-checkins] peps: Add TBD about cancellation.

[guido.van.rossum]

http://hg.python.org/peps/rev/d68ee9af89e3
changeset:   4613:d68ee9af89e3
user:        Guido van Rossum <guido at google.com>
date:        Fri Dec 14 20:09:48 2012 -0800
summary:
  Add TBD about cancellation.

files:
  pep-3156.txt |  11 ++++++++++-
  1 files changed, 10 insertions(+), 1 deletions(-)


diff --git a/pep-3156.txt b/pep-3156.txt
--- a/pep-3156.txt
+++ b/pep-3156.txt
@@ -750,6 +750,14 @@
 
 TBD: Be more specific.
 
+Cancellation
+------------
+
+TBD.  When a Task is canceled its coroutine may see an exception at
+any point where it is yielding to the scheduler (i.e., potentially at
+any ``yield from`` operation).  We need to spell out which exception
+is raised.
+
 
 Open Issues
 ===========
@@ -758,7 +766,8 @@
   (though not absolutely dictates) 'canceled' (one ell), but outside
   the US 'cancelled' (two ells) prevails.  PEP 3148, whose author
   currently lives in Australia, uses ``cancelled()`` as a method name
-  on its Future class.
+  on its Future class.  Also, even in the US, 'cancellation' seems
+  to be preferred over cancelation.
 
 - Do we need introspection APIs?  E.g. asking for the read callback
   given a file descriptor.  Or when the next scheduled call is.  Or

-- 
Repository URL: http://hg.python.org/peps