[Python-checkins] cpython (3.5): docs: Update asyncio docs & whatsnew
yury.selivanov
python-checkins at python.org
Mon May 16 16:25:22 EDT 2016
https://hg.python.org/cpython/rev/83450939b106
changeset: 101386:83450939b106
branch: 3.5
parent: 101383:32ceaad6243d
user: Yury Selivanov <yselivanov at sprymix.com>
date: Mon May 16 16:23:00 2016 -0400
summary:
docs: Update asyncio docs & whatsnew
files:
Doc/library/asyncio-eventloop.rst | 21 +++++++++++
Doc/library/asyncio-stream.rst | 36 +++++++++++++++++++
Doc/library/asyncio-task.rst | 2 +
Doc/whatsnew/3.5.rst | 27 ++++++++++++++
4 files changed, 86 insertions(+), 0 deletions(-)
diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -179,6 +179,20 @@
The :func:`asyncio.sleep` function.
+Futures
+-------
+
+.. method:: BaseEventLoop.create_future()
+
+ Create an :class:`asyncio.Future` object attached to the loop.
+
+ This is a preferred way to create futures in asyncio, as event
+ loop implementations can provide alternative implementations
+ of the Future class (with better performance or instrumentation).
+
+ .. versionadded:: 3.5.2
+
+
Tasks
-----
@@ -669,6 +683,13 @@
will be a ``dict`` object (see :meth:`call_exception_handler`
documentation for details about context).
+.. method:: BaseEventLoop.get_exception_handler()
+
+ Return the exception handler, or ``None`` if the default one
+ is in use.
+
+ .. versionadded:: 3.5.2
+
.. method:: BaseEventLoop.default_exception_handler(context)
Default exception handler.
diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -142,6 +142,30 @@
This method is a :ref:`coroutine <coroutine>`.
+ .. coroutinemethod:: readuntil(separator=b'\n')
+
+ Read data from the stream until ``separator`` is found.
+
+ On success, the data and separator will be removed from the
+ internal buffer (consumed). Returned data will include the
+ separator at the end.
+
+ Configured stream limit is used to check result. Limit sets the
+ maximal length of data that can be returned, not counting the
+ separator.
+
+ If an EOF occurs and the complete separator is still not found,
+ an :exc:`IncompleteReadError` exception will be
+ raised, and the internal buffer will be reset. The
+ :attr:`IncompleteReadError.partial` attribute may contain the
+ separator partially.
+
+ If the data cannot be read because of over limit, a
+ :exc:`LimitOverrunError` exception will be raised, and the data
+ will be left in the internal buffer, so it can be read again.
+
+ .. versionadded:: 3.5.2
+
.. method:: at_eof()
Return ``True`` if the buffer is empty and :meth:`feed_eof` was called.
@@ -251,6 +275,18 @@
Read bytes string before the end of stream was reached (:class:`bytes`).
+LimitOverrunError
+=================
+
+.. exception:: LimitOverrunError
+
+ Reached the buffer limit while looking for a separator.
+
+ .. attribute:: consumed
+
+ Total number of to be consumed bytes.
+
+
Stream examples
===============
diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -677,6 +677,8 @@
Passing ``None`` as *timeout* argument disables the manager logic.
+ .. versionadded:: 3.5.2
+
.. coroutinefunction:: wait(futures, \*, loop=None, timeout=None,\
return_when=ALL_COMPLETED)
diff --git a/Doc/whatsnew/3.5.rst b/Doc/whatsnew/3.5.rst
--- a/Doc/whatsnew/3.5.rst
+++ b/Doc/whatsnew/3.5.rst
@@ -822,6 +822,33 @@
method can now accept a list of hosts.
(Contributed by Yann Sionneau.)
+Updates in 3.5.2:
+
+* New :meth:`loop.create_future() <asyncio.BaseEventLoop.create_future>`
+ method to create Future objects. This allows alternative event
+ loop implementations, such as
+ `uvloop <https://github.com/MagicStack/uvloop>`_, to provide a faster
+ :class:`asyncio.Future` implementation.
+ (Contributed by Yury Selivanov.)
+
+* New :meth:`loop.get_exception_handler() <asyncio.BaseEventLoop.get_exception_handler>`
+ method to get the current exception handler.
+ (Contributed by Yury Selivanov.)
+
+* New :func:`~asyncio.timeout` context manager to simplify timeouts
+ handling code.
+ (Contributed by Andrew Svetlov.)
+
+* New :meth:`StreamReader.readuntil() <asyncio.StreamReader.readuntil>`
+ method to read data from the stream until a separator bytes
+ sequence appears.
+ (Contributed by Mark Korenberg.)
+
+* The :meth:`loop.getaddrinfo() <asyncio.BaseEventLoop.getaddrinfo>`
+ method is optimized to avoid calling the system ``getaddrinfo``
+ function if the address is already resolved.
+ (Contributed by A. Jesse Jiryu Davis.)
+
bz2
---
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Repository URL: https://hg.python.org/cpython
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