[Python-checkins] peps: Minor clarifications.
guido.van.rossum
python-checkins at python.org
Thu May 30 00:33:57 CEST 2013
http://hg.python.org/peps/rev/a33c5941269a
changeset: 4918:a33c5941269a
user: Guido van Rossum <guido at python.org>
date: Wed May 29 15:33:55 2013 -0700
summary:
Minor clarifications.
files:
pep-3156.txt | 30 ++++++++++++++++++------------
1 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/pep-3156.txt b/pep-3156.txt
--- a/pep-3156.txt
+++ b/pep-3156.txt
@@ -846,6 +846,12 @@
convention from the section "Callback Style" below) is always called
with a single argument, the Future object.
+- ``remove_done_callback(fn)``. Remove the argument from the list of
+ callbacks. This method is not defined by PEP 3148. The argument
+ must be equal (using ``==``) to the argument passed to
+ ``add_done_callback()``. Returns the number of times the callback
+ was removed.
+
- ``set_result(result)``. The Future must not be done (nor cancelled)
already. This makes the Future done and schedules the callbacks.
Difference with PEP 3148: This is a public API.
@@ -1302,25 +1308,25 @@
- ``FIRST_EXCEPTION``: Wait until at least one Future is done (not
cancelled) with an exception set. (The exclusion of cancelled
- Futures from the filter is surprising, but PEP 3148 does it this
- way.)
+ Futures from the condition is surprising, but PEP 3148 does it
+ this way.)
- ``tulip.as_completed(fs, timeout=None)``. Returns an iterator whose
- values are Futures; waiting for successive values waits until the
- next Future or coroutine from the set ``fs`` completes, and returns
- its result (or raises its exception). The optional argument
- ``timeout`` has the same meaning and default as it does for
- ``concurrent.futures.wait()``: when the timeout occurs, the next
- Future returned by the iterator will raise ``TimeoutError`` when
- waited for. Example of use::
+ values are Futures or coroutines; waiting for successive values
+ waits until the next Future or coroutine from the set ``fs``
+ completes, and returns its result (or raises its exception). The
+ optional argument ``timeout`` has the same meaning and default as it
+ does for ``concurrent.futures.wait()``: when the timeout occurs, the
+ next Future returned by the iterator will raise ``TimeoutError``
+ when waited for. Example of use::
for f in as_completed(fs):
result = yield from f # May raise an exception.
# Use result.
- Note: if you do not wait for the futures as they are produced by the
- iterator, your ``for`` loop may not make progress (since you are not
- allowing other tasks to run).
+ Note: if you do not wait for the values produced by the iterator,
+ your ``for`` loop may not make progress (since you are not allowing
+ other tasks to run).
Sleeping
--------
--
Repository URL: http://hg.python.org/peps
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