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# Copyright (C) 2001-2021, Python Software Foundation

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# Translators:

# Freesand Leo <yuqinju@163.com>, 2019

#

#, fuzzy

msgid ""

msgstr ""

"Project-Id-Version: Python 3.7\n"

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"PO-Revision-Date: 2019-09-01 03:42+0000\n"

"Last-Translator: Freesand Leo <yuqinju@163.com>, 2019\n"

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#: ../../reference/toplevel_components.rst:6

msgid "Top-level components"

msgstr "最高层级组件"

#: ../../reference/toplevel_components.rst:10

msgid ""

"The Python interpreter can get its input from a number of sources: from a "

"script passed to it as standard input or as program argument, typed in "

"interactively, from a module source file, etc. This chapter gives the "

"syntax used in these cases."

msgstr ""

"Python 解释器可以从多种源获得输入：作为标准输入或程序参数传入的脚本，以交互方式键入的语句，导入的模块源文件等等。 "

"这一章将给出在这些情况下所用的语法。"

#: ../../reference/toplevel_components.rst:19

msgid "Complete Python programs"

msgstr "完整的 Python 程序"

#: ../../reference/toplevel_components.rst:28

msgid ""

"While a language specification need not prescribe how the language "

"interpreter is invoked, it is useful to have a notion of a complete Python "

"program. A complete Python program is executed in a minimally initialized "

"environment: all built-in and standard modules are available, but none have "

"been initialized, except for :mod:`sys` (various system services), "

":mod:`builtins` (built-in functions, exceptions and ``None``) and "

":mod:`__main__`. The latter is used to provide the local and global "

"namespace for execution of the complete program."

msgstr ""

"虽然语言规范描述不必规定如何发起调用语言解释器，但对完整的 Python 程序加以说明还是很有用的。 一个完整的 Python "

"程序会在最小初始化环境中被执行：所有内置和标准模块均为可用，但均处于未初始化状态，只有 :mod:`sys` (各种系统服务), "

":mod:`builtins` (内置函数、异常以及 ``None``) 和 :mod:`__main__` 除外。 "

"最后一个模块用于为完整程序的执行提供局部和全局命名空间。"

#: ../../reference/toplevel_components.rst:36

msgid ""

"The syntax for a complete Python program is that for file input, described "

"in the next section."

msgstr "适用于一个完整 Python 程序的语法即下节所描述的文件输入。"

#: ../../reference/toplevel_components.rst:43

msgid ""

"The interpreter may also be invoked in interactive mode; in this case, it "

"does not read and execute a complete program but reads and executes one "

"statement (possibly compound) at a time. The initial environment is "

"identical to that of a complete program; each statement is executed in the "

"namespace of :mod:`__main__`."

msgstr ""

"解释器也可以通过交互模式被发起调用；在此情况下，它并不读取和执行一个完整程序，而是每次读取和执行一条语句（可能为复合语句）。 "

"此时的初始环境与一个完整程序的相同；每条语句会在 :mod:`__main__` 的命名空间中被执行。"

#: ../../reference/toplevel_components.rst:55

msgid ""

"A complete program can be passed to the interpreter in three forms: with the"

" :option:`-c` *string* command line option, as a file passed as the first "

"command line argument, or as standard input. If the file or standard input "

"is a tty device, the interpreter enters interactive mode; otherwise, it "

"executes the file as a complete program."

msgstr ""

"一个完整程序可通过三种形式被传递给解释器：使用 :option:`-c` *字符串* 命令行选项，使用一个文件作为第一个命令行参数，或者使用标准输入。 "

"如果文件或标准输入是一个 tty 设置，解释器会进入交互模式；否则的话，它会将文件当作一个完整程序来执行。"

#: ../../reference/toplevel_components.rst:65

msgid "File input"

msgstr "文件输入"

#: ../../reference/toplevel_components.rst:67

msgid "All input read from non-interactive files has the same form:"

msgstr "所有从非交互式文件读取的输入都具有相同的形式:"

#: ../../reference/toplevel_components.rst:72

msgid "This syntax is used in the following situations:"

msgstr "此语法用于下列几种情况:"

#: ../../reference/toplevel_components.rst:74

msgid "when parsing a complete Python program (from a file or from a string);"

msgstr "解析一个完整 Python 程序时（从文件或字符串）；"

#: ../../reference/toplevel_components.rst:76

msgid "when parsing a module;"

msgstr "解析一个模块时；"

#: ../../reference/toplevel_components.rst:78

msgid "when parsing a string passed to the :func:`exec` function;"

msgstr "解析一个传递给 :func:`exec` 函数的字符串时；"

#: ../../reference/toplevel_components.rst:84

msgid "Interactive input"

msgstr "交互式输入"

#: ../../reference/toplevel_components.rst:86

msgid "Input in interactive mode is parsed using the following grammar:"

msgstr "交互模式下的输入使用以下语法进行解析:"

#: ../../reference/toplevel_components.rst:91

msgid ""

"Note that a (top-level) compound statement must be followed by a blank line "

"in interactive mode; this is needed to help the parser detect the end of the"

" input."

msgstr "请注意在交互模式下一条（最高层级）复合语句必须带有一个空行；这对于帮助解析器确定输入的结束是必须的。"

#: ../../reference/toplevel_components.rst:98

msgid "Expression input"

msgstr "表达式输入"

#: ../../reference/toplevel_components.rst:103

msgid ""

":func:`eval` is used for expression input. It ignores leading whitespace. "

"The string argument to :func:`eval` must have the following form:"

msgstr ":func:`eval` 被用于表达式输入。 它会忽略开头的空白。 传递给 :func:`eval` 的字符串参数必须具有以下形式:"