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#: ../../tutorial/appetite.rst:5
msgid "Whetting Your Appetite"
msgstr "课前甜点"

#: ../../tutorial/appetite.rst:7
msgid ""
"If you do much work on computers, eventually you find that there's some task"
" you'd like to automate.  For example, you may wish to perform a search-and-"
"replace over a large number of text files, or rename and rearrange a bunch "
"of photo files in a complicated way. Perhaps you'd like to write a small "
"custom database, or a specialized GUI application, or a simple game."
msgstr ""
"如果您的工作主要是用电脑完成的，总有一天您会想能不能自动执行一些任务。比如，对大量文本文件执行查找、替换操作；利用复杂的规则重命名、重排序一堆照片文件；也可能您想编写一个小型数据库、或开发专用的图形界面应用，甚至是开发一个简单的游戏。"

#: ../../tutorial/appetite.rst:13
msgid ""
"If you're a professional software developer, you may have to work with "
"several C/C++/Java libraries but find the usual write/compile/test/re-"
"compile cycle is too slow.  Perhaps you're writing a test suite for such a "
"library and find writing the testing code a tedious task.  Or maybe you've "
"written a program that could use an extension language, and you don't want "
"to design and implement a whole new language for your application."
msgstr ""
"作为一名专业软件开发人员，您可能要处理 C/C++/Java "
"库，但编码、编译、测试、再编译这些开发流程太慢了；也许您正在给这些库开发测试套件，但总觉得这项工作真是枯燥乏味。又或许，您开发了个使用扩展语言的软件，却不想为这个软件专门设计一种新语言。"

#: ../../tutorial/appetite.rst:20
msgid "Python is just the language for you."
msgstr "那么，Python 正好能满足您的需要。"

#: ../../tutorial/appetite.rst:22
msgid ""
"You could write a Unix shell script or Windows batch files for some of these"
" tasks, but shell scripts are best at moving around files and changing text "
"data, not well-suited for GUI applications or games. You could write a "
"C/C++/Java program, but it can take a lot of development time to get even a "
"first-draft program.  Python is simpler to use, available on Windows, macOS,"
" and Unix operating systems, and will help you get the job done more "
"quickly."
msgstr ""
"你可以针对这些任务编写 Unix shell 脚本或 Windows 批处理文件，但 shell 脚本擅长的是移动文件和改变文本数据，而不适合编写 "
"GUI 应用或游戏。 你可以编写 C/C++/Java 程序，但即使只完成一个初始版程序也需要耗费很长的开发时间。 Python "
"则更为简单易用，同时支持 Windows, macOS 和 Unix 操作系统，并能帮助你更快速地完成工作。"

#: ../../tutorial/appetite.rst:29
msgid ""
"Python is simple to use, but it is a real programming language, offering "
"much more structure and support for large programs than shell scripts or "
"batch files can offer.  On the other hand, Python also offers much more "
"error checking than C, and, being a *very-high-level language*, it has high-"
"level data types built in, such as flexible arrays and dictionaries.  "
"Because of its more general data types Python is applicable to a much larger"
" problem domain than Awk or even Perl, yet many things are at least as easy "
"in Python as in those languages."
msgstr ""
"Python 虽然简单易用，但它可是真正的编程语言，提供了大量的数据结构，也支持开发大型程序，远超 shell 脚本或批处理文件；Python "
"提供的错误检查比 C 还多；作为一种“非常高级的语言”，它内置了灵活的数组与字典等高级数据类型。正因为配备了更通用的数据类型，Python 比 "
"Awk，甚至 Perl 能解决更多问题，而且，很多时候，Python 比这些语言更简单。"

#: ../../tutorial/appetite.rst:37
msgid ""
"Python allows you to split your program into modules that can be reused in "
"other Python programs.  It comes with a large collection of standard modules"
" that you can use as the basis of your programs --- or as examples to start "
"learning to program in Python.  Some of these modules provide things like "
"file I/O, system calls, sockets, and even interfaces to graphical user "
"interface toolkits like Tk."
msgstr ""
"Python 支持把程序分割为模块，以便在其他 Python 程序中复用。它还内置了大量标准模块，作为开发程序的基础 —— 您还可以把这些模块当作学习 "
"Python 编程的实例。这些模块包括 I/O、系统调用、套接字，甚至还包括 Tk 图形用户界面工作套件。"

#: ../../tutorial/appetite.rst:44
msgid ""
"Python is an interpreted language, which can save you considerable time "
"during program development because no compilation and linking is necessary."
"  The interpreter can be used interactively, which makes it easy to "
"experiment with features of the language, to write throw-away programs, or "
"to test functions during bottom-up program development. It is also a handy "
"desk calculator."
msgstr ""
"Python "
"是一种解释型语言，不需要编译和链接，可以节省大量开发时间。它的解释器实现了交互式操作，轻而易举地就能试用各种语言功能，编写临时程序，或在自底向上的程序开发中测试功能。同时，它还是一个超好用的计算器。"

#: ../../tutorial/appetite.rst:50
msgid ""
"Python enables programs to be written compactly and readably.  Programs "
"written in Python are typically much shorter than equivalent C,  C++, or "
"Java programs, for several reasons:"
msgstr "Python 程序简洁、易读，通常比实现同种功能的 C、C++、Java 代码短很多，原因如下："

#: ../../tutorial/appetite.rst:54
msgid ""
"the high-level data types allow you to express complex operations in a "
"single statement;"
msgstr "高级数据类型允许在单一语句中表述复杂操作；"

#: ../../tutorial/appetite.rst:57
msgid ""
"statement grouping is done by indentation instead of beginning and ending "
"brackets;"
msgstr "使用缩进，而不是括号实现代码块分组；"

#: ../../tutorial/appetite.rst:60
msgid "no variable or argument declarations are necessary."
msgstr "无需预声明变量或参数。"

#: ../../tutorial/appetite.rst:62
msgid ""
"Python is *extensible*: if you know how to program in C it is easy to add a "
"new built-in function or module to the interpreter, either to perform "
"critical operations at maximum speed, or to link Python programs to "
"libraries that may only be available in binary form (such as a vendor-"
"specific graphics library). Once you are really hooked, you can link the "
"Python interpreter into an application written in C and use it as an "
"extension or command language for that application."
msgstr ""
"Python “可以扩展”：会开发 C 语言程序，就能快速上手为解释器增加新的内置函数或模块，不论是让核心程序以最高速度运行，还是把 Python "
"程序链接到只提供预编译程序的库（比如，硬件图形库）。只要下点功夫，就能把 Python 解释器和用 C 开发的应用链接在一起，用它来扩展和控制该应用。"

#: ../../tutorial/appetite.rst:70
msgid ""
"By the way, the language is named after the BBC show \"Monty Python's Flying"
" Circus\" and has nothing to do with reptiles.  Making references to Monty "
"Python skits in documentation is not only allowed, it is encouraged!"
msgstr ""
"顺便提一句，本语言的命名源自 BBC 的 “Monty Python 飞行马戏团”，与爬行动物无关（Python 原义为“蟒蛇”）。欢迎大家在文档中引用"
" Monty Python 小品短篇集，多多益善！"

#: ../../tutorial/appetite.rst:74
msgid ""
"Now that you are all excited about Python, you'll want to examine it in some"
" more detail.  Since the best way to learn a language is to use it, the "
"tutorial invites you to play with the Python interpreter as you read."
msgstr ""
"现在，您已经对 Python 跃跃欲试，想深入了解一些细节了吧。要知道，学习语言的最佳方式是上手实践，建议您边阅读本教程，边在 Python "
"解释器中练习。"

#: ../../tutorial/appetite.rst:78
msgid ""
"In the next chapter, the mechanics of using the interpreter are explained.  "
"This is rather mundane information, but essential for trying out the "
"examples shown later."
msgstr "下一章介绍解释器的用法。这部分内容有些单调乏味，但对上手实践后面的例子来说却至关重要。"

#: ../../tutorial/appetite.rst:82
msgid ""
"The rest of the tutorial introduces various features of the Python language "
"and system through examples, beginning with simple expressions, statements "
"and data types, through functions and modules, and finally touching upon "
"advanced concepts like exceptions and user-defined classes."
msgstr ""
"本教程的其他部分将利用各种示例，介绍 Python "
"语言、系统的功能，开始只是简单的表达式、语句和数据类型，然后是函数、模块，最后，介绍一些高级概念，如，异常、用户定义的类等功能。"