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# SOME DESCRIPTIVE TITLE.
# Copyright (C) 2001-2018, Python Software Foundation
# This file is distributed under the same license as the Python package.
#
# Translators:
# woodrow-shen <woodrow.shen@gmail.com>, 2016
msgid ""
msgstr ""
"Project-Id-Version: Python 3.7\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2018-06-26 18:54+0800\n"
"PO-Revision-Date: 2018-05-23 16:18+0000\n"
"Last-Translator: Adrian Liaw <adrianliaw2000@gmail.com>\n"
"Language-Team: Chinese - TAIWAN (https://github.com/python/python-docs-zh-"
"tw)\n"
"Language: zh_TW\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=1; plural=0;\n"
#: ../../tutorial/stdlib2.rst:5
msgid "Brief Tour of the Standard Library --- Part II"
msgstr ""
#: ../../tutorial/stdlib2.rst:7
msgid ""
"This second tour covers more advanced modules that support professional "
"programming needs. These modules rarely occur in small scripts."
msgstr ""
"第二部分涵蓋更多支援專業程式設計所需要的進階模組。這些模組很少出現在小腳本"
"中。"
#: ../../tutorial/stdlib2.rst:14
msgid "Output Formatting"
msgstr ""
#: ../../tutorial/stdlib2.rst:16
msgid ""
"The :mod:`reprlib` module provides a version of :func:`repr` customized for "
"abbreviated displays of large or deeply nested containers::"
msgstr ""
#: ../../tutorial/stdlib2.rst:23
msgid ""
"The :mod:`pprint` module offers more sophisticated control over printing "
"both built-in and user defined objects in a way that is readable by the "
"interpreter. When the result is longer than one line, the \"pretty printer\" "
"adds line breaks and indentation to more clearly reveal data structure::"
msgstr ""
#: ../../tutorial/stdlib2.rst:39
msgid ""
"The :mod:`textwrap` module formats paragraphs of text to fit a given screen "
"width::"
msgstr ""
#: ../../tutorial/stdlib2.rst:53
msgid ""
"The :mod:`locale` module accesses a database of culture specific data "
"formats. The grouping attribute of locale's format function provides a "
"direct way of formatting numbers with group separators::"
msgstr ""
#: ../../tutorial/stdlib2.rst:72
msgid "Templating"
msgstr ""
#: ../../tutorial/stdlib2.rst:74
msgid ""
"The :mod:`string` module includes a versatile :class:`~string.Template` "
"class with a simplified syntax suitable for editing by end-users. This "
"allows users to customize their applications without having to alter the "
"application."
msgstr ""
#: ../../tutorial/stdlib2.rst:78
msgid ""
"The format uses placeholder names formed by ``$`` with valid Python "
"identifiers (alphanumeric characters and underscores). Surrounding the "
"placeholder with braces allows it to be followed by more alphanumeric "
"letters with no intervening spaces. Writing ``$$`` creates a single escaped "
"``$``::"
msgstr ""
#: ../../tutorial/stdlib2.rst:88
msgid ""
"The :meth:`~string.Template.substitute` method raises a :exc:`KeyError` when "
"a placeholder is not supplied in a dictionary or a keyword argument. For "
"mail-merge style applications, user supplied data may be incomplete and the :"
"meth:`~string.Template.safe_substitute` method may be more appropriate --- "
"it will leave placeholders unchanged if data is missing::"
msgstr ""
#: ../../tutorial/stdlib2.rst:103
msgid ""
"Template subclasses can specify a custom delimiter. For example, a batch "
"renaming utility for a photo browser may elect to use percent signs for "
"placeholders such as the current date, image sequence number, or file "
"format::"
msgstr ""
#: ../../tutorial/stdlib2.rst:125
msgid ""
"Another application for templating is separating program logic from the "
"details of multiple output formats. This makes it possible to substitute "
"custom templates for XML files, plain text reports, and HTML web reports."
msgstr ""
#: ../../tutorial/stdlib2.rst:133
msgid "Working with Binary Data Record Layouts"
msgstr ""
#: ../../tutorial/stdlib2.rst:135
msgid ""
"The :mod:`struct` module provides :func:`~struct.pack` and :func:`~struct."
"unpack` functions for working with variable length binary record formats. "
"The following example shows how to loop through header information in a ZIP "
"file without using the :mod:`zipfile` module. Pack codes ``\"H\"`` and ``\"I"
"\"`` represent two and four byte unsigned numbers respectively. The ``\"<"
"\"`` indicates that they are standard size and in little-endian byte order::"
msgstr ""
#: ../../tutorial/stdlib2.rst:166
msgid "Multi-threading"
msgstr ""
#: ../../tutorial/stdlib2.rst:168
msgid ""
"Threading is a technique for decoupling tasks which are not sequentially "
"dependent. Threads can be used to improve the responsiveness of "
"applications that accept user input while other tasks run in the "
"background. A related use case is running I/O in parallel with computations "
"in another thread."
msgstr ""
#: ../../tutorial/stdlib2.rst:173
msgid ""
"The following code shows how the high level :mod:`threading` module can run "
"tasks in background while the main program continues to run::"
msgstr ""
#: ../../tutorial/stdlib2.rst:197
msgid ""
"The principal challenge of multi-threaded applications is coordinating "
"threads that share data or other resources. To that end, the threading "
"module provides a number of synchronization primitives including locks, "
"events, condition variables, and semaphores."
msgstr ""
#: ../../tutorial/stdlib2.rst:202
msgid ""
"While those tools are powerful, minor design errors can result in problems "
"that are difficult to reproduce. So, the preferred approach to task "
"coordination is to concentrate all access to a resource in a single thread "
"and then use the :mod:`queue` module to feed that thread with requests from "
"other threads. Applications using :class:`~queue.Queue` objects for inter-"
"thread communication and coordination are easier to design, more readable, "
"and more reliable."
msgstr ""
#: ../../tutorial/stdlib2.rst:213
msgid "Logging"
msgstr ""
#: ../../tutorial/stdlib2.rst:215
msgid ""
"The :mod:`logging` module offers a full featured and flexible logging "
"system. At its simplest, log messages are sent to a file or to ``sys."
"stderr``::"
msgstr ""
#: ../../tutorial/stdlib2.rst:225
msgid "This produces the following output:"
msgstr ""
#: ../../tutorial/stdlib2.rst:233
msgid ""
"By default, informational and debugging messages are suppressed and the "
"output is sent to standard error. Other output options include routing "
"messages through email, datagrams, sockets, or to an HTTP Server. New "
"filters can select different routing based on message priority: :const:"
"`~logging.DEBUG`, :const:`~logging.INFO`, :const:`~logging.WARNING`, :const:"
"`~logging.ERROR`, and :const:`~logging.CRITICAL`."
msgstr ""
#: ../../tutorial/stdlib2.rst:240
msgid ""
"The logging system can be configured directly from Python or can be loaded "
"from a user editable configuration file for customized logging without "
"altering the application."
msgstr ""
#: ../../tutorial/stdlib2.rst:248
msgid "Weak References"
msgstr ""
#: ../../tutorial/stdlib2.rst:250
msgid ""
"Python does automatic memory management (reference counting for most objects "
"and :term:`garbage collection` to eliminate cycles). The memory is freed "
"shortly after the last reference to it has been eliminated."
msgstr ""
#: ../../tutorial/stdlib2.rst:254
msgid ""
"This approach works fine for most applications but occasionally there is a "
"need to track objects only as long as they are being used by something else. "
"Unfortunately, just tracking them creates a reference that makes them "
"permanent. The :mod:`weakref` module provides tools for tracking objects "
"without creating a reference. When the object is no longer needed, it is "
"automatically removed from a weakref table and a callback is triggered for "
"weakref objects. Typical applications include caching objects that are "
"expensive to create::"
msgstr ""
#: ../../tutorial/stdlib2.rst:289
msgid "Tools for Working with Lists"
msgstr ""
#: ../../tutorial/stdlib2.rst:291
msgid ""
"Many data structure needs can be met with the built-in list type. However, "
"sometimes there is a need for alternative implementations with different "
"performance trade-offs."
msgstr ""
#: ../../tutorial/stdlib2.rst:295
msgid ""
"The :mod:`array` module provides an :class:`~array.array()` object that is "
"like a list that stores only homogeneous data and stores it more compactly. "
"The following example shows an array of numbers stored as two byte unsigned "
"binary numbers (typecode ``\"H\"``) rather than the usual 16 bytes per entry "
"for regular lists of Python int objects::"
msgstr ""
#: ../../tutorial/stdlib2.rst:308
msgid ""
"The :mod:`collections` module provides a :class:`~collections.deque()` "
"object that is like a list with faster appends and pops from the left side "
"but slower lookups in the middle. These objects are well suited for "
"implementing queues and breadth first tree searches::"
msgstr ""
#: ../../tutorial/stdlib2.rst:329
msgid ""
"In addition to alternative list implementations, the library also offers "
"other tools such as the :mod:`bisect` module with functions for manipulating "
"sorted lists::"
msgstr ""
#: ../../tutorial/stdlib2.rst:339
msgid ""
"The :mod:`heapq` module provides functions for implementing heaps based on "
"regular lists. The lowest valued entry is always kept at position zero. "
"This is useful for applications which repeatedly access the smallest element "
"but do not want to run a full list sort::"
msgstr ""
#: ../../tutorial/stdlib2.rst:355
msgid "Decimal Floating Point Arithmetic"
msgstr ""
#: ../../tutorial/stdlib2.rst:357
msgid ""
"The :mod:`decimal` module offers a :class:`~decimal.Decimal` datatype for "
"decimal floating point arithmetic. Compared to the built-in :class:`float` "
"implementation of binary floating point, the class is especially helpful for"
msgstr ""
#: ../../tutorial/stdlib2.rst:361
msgid ""
"financial applications and other uses which require exact decimal "
"representation,"
msgstr ""
#: ../../tutorial/stdlib2.rst:363
msgid "control over precision,"
msgstr ""
#: ../../tutorial/stdlib2.rst:364
msgid "control over rounding to meet legal or regulatory requirements,"
msgstr ""
#: ../../tutorial/stdlib2.rst:365
msgid "tracking of significant decimal places, or"
msgstr ""
#: ../../tutorial/stdlib2.rst:366
msgid ""
"applications where the user expects the results to match calculations done "
"by hand."
msgstr ""
#: ../../tutorial/stdlib2.rst:369
msgid ""
"For example, calculating a 5% tax on a 70 cent phone charge gives different "
"results in decimal floating point and binary floating point. The difference "
"becomes significant if the results are rounded to the nearest cent::"
msgstr ""
#: ../../tutorial/stdlib2.rst:379
msgid ""
"The :class:`~decimal.Decimal` result keeps a trailing zero, automatically "
"inferring four place significance from multiplicands with two place "
"significance. Decimal reproduces mathematics as done by hand and avoids "
"issues that can arise when binary floating point cannot exactly represent "
"decimal quantities."
msgstr ""
#: ../../tutorial/stdlib2.rst:385
msgid ""
"Exact representation enables the :class:`~decimal.Decimal` class to perform "
"modulo calculations and equality tests that are unsuitable for binary "
"floating point::"
msgstr ""
#: ../../tutorial/stdlib2.rst:399
msgid ""
"The :mod:`decimal` module provides arithmetic with as much precision as "
"needed::"
msgstr ""