asyncio-queue.po

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# ww song <sww4718168@gmail.com>, 2019
# Alpha Du <alphanow@gmail.com>, 2019
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# 
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#: ../../library/asyncio-queue.rst:7
msgid "Queues"
msgstr "队列集"

#: ../../library/asyncio-queue.rst:9
msgid ""
"asyncio queues are designed to be similar to classes of the :mod:`queue` "
"module.  Although asyncio queues are not thread-safe, they are designed to "
"be used specifically in async/await code."
msgstr ""
"asyncio 队列被设计成与 :mod:`queue` 模块类似。尽管 asyncio队列不是线程安全的，但是他们是被设计专用于 "
"async/await 代码。"

#: ../../library/asyncio-queue.rst:13
msgid ""
"Note that methods of asyncio queues don't have a *timeout* parameter; use "
":func:`asyncio.wait_for` function to do queue operations with a timeout."
msgstr ""
"注意asyncio 的队列没有 *timeout* 形参；请使用 :func:`asyncio.wait_for` 函数为队列添加超时操作。"

#: ../../library/asyncio-queue.rst:17
msgid "See also the `Examples`_ section below."
msgstr "参见下面的 `Examples`_ 部分。"

#: ../../library/asyncio-queue.rst:20
msgid "Queue"
msgstr "队列"

#: ../../library/asyncio-queue.rst:24
msgid "A first in, first out (FIFO) queue."
msgstr "先进，先出（FIFO）队列"

#: ../../library/asyncio-queue.rst:26
msgid ""
"If *maxsize* is less than or equal to zero, the queue size is infinite.  If "
"it is an integer greater than ``0``, then ``await put()`` blocks when the "
"queue reaches *maxsize* until an item is removed by :meth:`get`."
msgstr ""
"如果 *maxsize* 小于等于零，则队列尺寸是无限的。如果是大于 ``0`` 的整数，则当队列达到 *maxsize* 时， ``await "
"put()`` 将阻塞至某个元素被 :meth:`get` 取出。"

#: ../../library/asyncio-queue.rst:31
msgid ""
"Unlike the standard library threading :mod:`queue`, the size of the queue is"
" always known and can be returned by calling the :meth:`qsize` method."
msgstr "不像标准库中的并发型 :mod:`queue` ，队列的尺寸一直是已知的，可以通过调用 :meth:`qsize` 方法返回。"

#: ../../library/asyncio-queue.rst:35
msgid "This class is :ref:`not thread safe <asyncio-multithreading>`."
msgstr "这个类不是线程安全的（:ref:`not thread safe <asyncio-multithreading>`）。"

#: ../../library/asyncio-queue.rst:39
msgid "Number of items allowed in the queue."
msgstr "队列中可存放的元素数量。"

#: ../../library/asyncio-queue.rst:43
msgid "Return ``True`` if the queue is empty, ``False`` otherwise."
msgstr "如果队列为空返回 ``True`` ，否则返回 ``False`` 。"

#: ../../library/asyncio-queue.rst:47
msgid "Return ``True`` if there are :attr:`maxsize` items in the queue."
msgstr "如果有 :attr:`maxsize` 个条目在队列中，则返回 ``True`` 。"

#: ../../library/asyncio-queue.rst:49
msgid ""
"If the queue was initialized with ``maxsize=0`` (the default), then "
":meth:`full()` never returns ``True``."
msgstr "如果队列用 ``maxsize=0`` （默认）初始化，则 :meth:`full()` 永远不会返回 ``True`` 。"

#: ../../library/asyncio-queue.rst:54
msgid ""
"Remove and return an item from the queue. If queue is empty, wait until an "
"item is available."
msgstr "从队列中删除并返回一个元素。如果队列为空，则等待，直到队列中有元素。"

#: ../../library/asyncio-queue.rst:59
msgid ""
"Return an item if one is immediately available, else raise "
":exc:`QueueEmpty`."
msgstr "立即返回一个队列中的元素，如果队列内有值，否则引发异常  :exc:`QueueEmpty` 。"

#: ../../library/asyncio-queue.rst:64
msgid "Block until all items in the queue have been received and processed."
msgstr "阻塞至队列中所有的元素都被接收和处理完毕。"

#: ../../library/asyncio-queue.rst:66
msgid ""
"The count of unfinished tasks goes up whenever an item is added to the "
"queue. The count goes down whenever a consumer coroutine calls "
":meth:`task_done` to indicate that the item was retrieved and all work on it"
" is complete.  When the count of unfinished tasks drops to zero, "
":meth:`join` unblocks."
msgstr ""
"当条目添加到队列的时候，未完成任务的计数就会增加。每当消费协程调用 :meth:`task_done` "
"表示这个条目已经被回收，该条目所有工作已经完成，未完成计数就会减少。当未完成计数降到零的时候， :meth:`join` 阻塞被解除。"

#: ../../library/asyncio-queue.rst:74
msgid ""
"Put an item into the queue. If the queue is full, wait until a free slot is "
"available before adding the item."
msgstr "添加一个元素进队列。如果队列满了，在添加元素之前，会一直等待空闲插槽可用。"

#: ../../library/asyncio-queue.rst:79
msgid "Put an item into the queue without blocking."
msgstr "不阻塞的放一个元素入队列。"

#: ../../library/asyncio-queue.rst:81
msgid "If no free slot is immediately available, raise :exc:`QueueFull`."
msgstr "如果没有立即可用的空闲槽，引发 :exc:`QueueFull` 异常。"

#: ../../library/asyncio-queue.rst:85
msgid "Return the number of items in the queue."
msgstr "返回队列用的元素数量。"

#: ../../library/asyncio-queue.rst:89
msgid "Indicate that a formerly enqueued task is complete."
msgstr "表明前面排队的任务已经完成，即get出来的元素相关操作已经完成。"

#: ../../library/asyncio-queue.rst:91
msgid ""
"Used by queue consumers. For each :meth:`~Queue.get` used to fetch a task, a"
" subsequent call to :meth:`task_done` tells the queue that the processing on"
" the task is complete."
msgstr ""
"由队列使用者控制。每个 :meth:`~Queue.get` 用于获取一个任务，任务最后调用 :meth:`task_done` "
"告诉队列，这个任务已经完成。"

#: ../../library/asyncio-queue.rst:95
msgid ""
"If a :meth:`join` is currently blocking, it will resume when all items have "
"been processed (meaning that a :meth:`task_done` call was received for every"
" item that had been :meth:`~Queue.put` into the queue)."
msgstr ""
"如果 :meth:`join` 当前正在阻塞，在所有条目都被处理后，将解除阻塞(意味着每个 :meth:`~Queue.put` 进队列的条目的 "
":meth:`task_done` 都被收到)。"

#: ../../library/asyncio-queue.rst:100
msgid ""
"Raises :exc:`ValueError` if called more times than there were items placed "
"in the queue."
msgstr "如果被调用的次数多于放入队列中的项目数量，将引发 :exc:`ValueError` 。"

#: ../../library/asyncio-queue.rst:105
msgid "Priority Queue"
msgstr "优先级队列"

#: ../../library/asyncio-queue.rst:109
msgid ""
"A variant of :class:`Queue`; retrieves entries in priority order (lowest "
"first)."
msgstr ":class:`Queue` 的变体；按优先级顺序取出条目 (最小的先取出)。"

#: ../../library/asyncio-queue.rst:112
msgid "Entries are typically tuples of the form ``(priority_number, data)``."
msgstr "条目通常是 ``(priority_number, data)`` 形式的元组。"

#: ../../library/asyncio-queue.rst:117
msgid "LIFO Queue"
msgstr "后进先出队列"

#: ../../library/asyncio-queue.rst:121
msgid ""
"A variant of :class:`Queue` that retrieves most recently added entries first"
" (last in, first out)."
msgstr ":class:`Queue` 的变体，先取出最近添加的条目（后进，先出）。"

#: ../../library/asyncio-queue.rst:126
msgid "Exceptions"
msgstr "异常"

#: ../../library/asyncio-queue.rst:130
msgid ""
"This exception is raised when the :meth:`~Queue.get_nowait` method is called"
" on an empty queue."
msgstr "当队列为空的时候，调用 :meth:`~Queue.get_nowait` 方法而引发这个异常。"

#: ../../library/asyncio-queue.rst:136
msgid ""
"Exception raised when the :meth:`~Queue.put_nowait` method is called on a "
"queue that has reached its *maxsize*."
msgstr "当队列中条目数量已经达到它的 *maxsize* 的时候，调用 :meth:`~Queue.put_nowait` 方法而引发的异常。"

#: ../../library/asyncio-queue.rst:141
msgid "Examples"
msgstr "例子"

#: ../../library/asyncio-queue.rst:145
msgid ""
"Queues can be used to distribute workload between several concurrent tasks::"
msgstr "队列能被用于多个的并发任务的工作量分配："