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#: ../../tutorial/interpreter.rst:5
msgid "Using the Python Interpreter"
msgstr "使用 Python 的解释器"

#: ../../tutorial/interpreter.rst:11
msgid "Invoking the Interpreter"
msgstr "唤出解释器"

#: ../../tutorial/interpreter.rst:13
msgid ""
"The Python interpreter is usually installed as "
":file:`/usr/local/bin/python3.10` on those machines where it is available; "
"putting :file:`/usr/local/bin` in your Unix shell's search path makes it "
"possible to start it by typing the command:"
msgstr ""
"Python 解释器在可用的机器上通常安装于 :file:`/usr/local/bin/python3.10` 路径下；将 "
":file:`/usr/local/bin` 加入你的 Unix 终端的搜索路径就可以通过键入以下命令来启动它:"

#: ../../tutorial/interpreter.rst:21
msgid ""
"to the shell. [#]_ Since the choice of the directory where the interpreter "
"lives is an installation option, other places are possible; check with your "
"local Python guru or system administrator.  (E.g., :file:`/usr/local/python`"
" is a popular alternative location.)"
msgstr ""
"这样，就可以在 shell 中运行 Python 了 [#]_ 。因为可以选择安装目录，解释器也有可能安装在别的位置；如果还不明白，就去问问身边的 "
"Python 大神或系统管理员。（例如，常见备选路径还有 :file:`/usr/local/python`。）"

#: ../../tutorial/interpreter.rst:26
msgid ""
"On Windows machines where you have installed Python from the :ref:`Microsoft"
" Store <windows-store>`, the :file:`python3.10` command will be available. "
"If you have the :ref:`py.exe launcher <launcher>` installed, you can use the"
" :file:`py` command. See :ref:`setting-envvars` for other ways to launch "
"Python."
msgstr ""
"在 Windows 机器上当你从 :ref:`Microsoft Store <windows-store>` 安装 Python "
"之后，:file:`python3.10` 命令将可使用。 如果你安装了 :ref:`py.exe 启动器 <launcher>`，你将可以使用 "
":file:`py` 命令。 请参阅 :ref:`setting-envvars` 了解其他启动 Python 的方式。"

#: ../../tutorial/interpreter.rst:31
msgid ""
"Typing an end-of-file character (:kbd:`Control-D` on Unix, :kbd:`Control-Z` "
"on Windows) at the primary prompt causes the interpreter to exit with a zero"
" exit status.  If that doesn't work, you can exit the interpreter by typing "
"the following command: ``quit()``."
msgstr ""
"在主提示符中，输入文件结束符（Unix 里是 :kbd:`Control-D`，Windows 里是 "
":kbd:`Control-Z`），就会退出解释器，退出状态码为 0。如果不能退出，还可以输入这个命令：``quit()``。"

#: ../../tutorial/interpreter.rst:36
msgid ""
"The interpreter's line-editing features include interactive editing, history"
" substitution and code completion on systems that support the `GNU Readline "
"<https://tiswww.case.edu/php/chet/readline/rltop.html>`_ library. Perhaps "
"the quickest check to see whether command line editing is supported is "
"typing :kbd:`Control-P` to the first Python prompt you get.  If it beeps, "
"you have command line editing; see Appendix :ref:`tut-interacting` for an "
"introduction to the keys.  If nothing appears to happen, or if ``^P`` is "
"echoed, command line editing isn't available; you'll only be able to use "
"backspace to remove characters from the current line."
msgstr ""
"在支持 `GNU Readline <https://tiswww.case.edu/php/chet/readline/rltop.html>`_ "
"库的系统中，解释器的行编辑功能包括交互式编辑、历史替换、代码补全等。检测是否支持命令行编辑最快速的方式是，在首次出现 Python 提示符时，输入 "
":kbd:`Control-P`。听到“哔”提示音，说明支持行编辑；请参阅附录 :ref:`tut-"
"interacting`，了解功能键。如果没有反应，或回显了 ``^P``，则说明不支持行编辑；只能用退格键删除当前行的字符。"

#: ../../tutorial/interpreter.rst:46
msgid ""
"The interpreter operates somewhat like the Unix shell: when called with "
"standard input connected to a tty device, it reads and executes commands "
"interactively; when called with a file name argument or with a file as "
"standard input, it reads and executes a *script* from that file."
msgstr ""
"解释器的操作方式类似 Unix Shell：用与 tty "
"设备关联的标准输入调用时，可以交互式地读取和执行命令；以文件名参数，或标准输入文件调用时，则读取并执行文件中的 *脚本*。"

#: ../../tutorial/interpreter.rst:51
msgid ""
"A second way of starting the interpreter is ``python -c command [arg] ...``,"
" which executes the statement(s) in *command*, analogous to the shell's "
":option:`-c` option.  Since Python statements often contain spaces or other "
"characters that are special to the shell, it is usually advised to quote "
"*command* in its entirety."
msgstr ""
"另一种启动解释器的方式是 ``python -c command [arg] ...``，这将执行 *command* 中的语句，相当于 shell 的"
" :option:`-c` 选项。 由于 Python 语句经常包含空格或其他会被 shell 特殊对待的字符，通常建议用引号将整个 *command*"
" 括起来。"

#: ../../tutorial/interpreter.rst:57
msgid ""
"Some Python modules are also useful as scripts.  These can be invoked using "
"``python -m module [arg] ...``, which executes the source file for *module* "
"as if you had spelled out its full name on the command line."
msgstr ""
"Python 模块也可以当作脚本使用。输入：``python -m module [arg] ...``，会执行 *module* "
"的源文件，这跟在命令行把路径写全了一样。"

#: ../../tutorial/interpreter.rst:61
msgid ""
"When a script file is used, it is sometimes useful to be able to run the "
"script and enter interactive mode afterwards.  This can be done by passing "
":option:`-i` before the script."
msgstr "在交互模式下运行脚本文件，只要在脚本名称参数前，加上选项 :option:`-i` 就可以了。"

#: ../../tutorial/interpreter.rst:65
msgid "All command line options are described in :ref:`using-on-general`."
msgstr "命令行的所有选项详见 :ref:`using-on-general`。"

#: ../../tutorial/interpreter.rst:71
msgid "Argument Passing"
msgstr "传入参数"

#: ../../tutorial/interpreter.rst:73
msgid ""
"When known to the interpreter, the script name and additional arguments "
"thereafter are turned into a list of strings and assigned to the ``argv`` "
"variable in the ``sys`` module.  You can access this list by executing "
"``import sys``.  The length of the list is at least one; when no script and "
"no arguments are given, ``sys.argv[0]`` is an empty string.  When the script"
" name is given as ``'-'`` (meaning  standard input), ``sys.argv[0]`` is set "
"to ``'-'``.  When :option:`-c` *command* is used, ``sys.argv[0]`` is set to "
"``'-c'``.  When :option:`-m` *module* is used, ``sys.argv[0]``  is set to "
"the full name of the located module.  Options found after  :option:`-c` "
"*command* or :option:`-m` *module* are not consumed  by the Python "
"interpreter's option processing but left in ``sys.argv`` for  the command or"
" module to handle."
msgstr ""
"解释器读取命令行参数，把脚本名与其他参数转化为字符串列表存到 ``sys`` 模块的 ``argv`` 变量里。执行 ``import "
"sys``，可以导入这个模块，并访问该列表。该列表最少有一个元素；未给定输入参数时，``sys.argv[0]`` 是空字符串。给定脚本名是 "
"``'-'`` （标准输入）时，``sys.argv[0]`` 是 ``'-'``。使用 :option:`-c` *command* "
"时，``sys.argv[0]`` 是 ``'-c'``。如果使用选项 :option:`-m` *module*，``sys.argv[0]`` "
"就是包含目录的模块全名。解释器不处理 :option:`-c` *command* 或 :option:`-m` *module* "
"之后的选项，而是直接留在 ``sys.argv`` 中由命令或模块来处理。"

#: ../../tutorial/interpreter.rst:89
msgid "Interactive Mode"
msgstr "交互模式"

#: ../../tutorial/interpreter.rst:91
msgid ""
"When commands are read from a tty, the interpreter is said to be in "
"*interactive mode*.  In this mode it prompts for the next command with the "
"*primary prompt*, usually three greater-than signs (``>>>``); for "
"continuation lines it prompts with the *secondary prompt*, by default three "
"dots (``...``). The interpreter prints a welcome message stating its version"
" number and a copyright notice before printing the first prompt:"
msgstr ""
"在终端（tty）输入并执行指令时，解释器在 *交互模式（interactive mode）* 中运行。在这种模式中，会显示 "
"*主提示符*，提示输入下一条指令，主提示符通常用三个大于号（``>>>``）表示；输入连续行时，显示 "
"*次要提示符*，默认是三个点（``...``）。进入解释器时，首先显示欢迎信息、版本信息、版权声明，然后才是提示符："

#: ../../tutorial/interpreter.rst:108
msgid ""
"Continuation lines are needed when entering a multi-line construct. As an "
"example, take a look at this :keyword:`if` statement::"
msgstr "输入多行架构的语句时，要用连续行。以 :keyword:`if` 为例："

#: ../../tutorial/interpreter.rst:118
msgid "For more on interactive mode, see :ref:`tut-interac`."
msgstr "交互模式的内容详见 :ref:`tut-interac`。"

#: ../../tutorial/interpreter.rst:124
msgid "The Interpreter and Its Environment"
msgstr "解释器的运行环境"

#: ../../tutorial/interpreter.rst:130
msgid "Source Code Encoding"
msgstr "源文件的字符编码"

#: ../../tutorial/interpreter.rst:132
msgid ""
"By default, Python source files are treated as encoded in UTF-8.  In that "
"encoding, characters of most languages in the world can be used "
"simultaneously in string literals, identifiers and comments --- although the"
" standard library only uses ASCII characters for identifiers, a convention "
"that any portable code should follow.  To display all these characters "
"properly, your editor must recognize that the file is UTF-8, and it must use"
" a font that supports all the characters in the file."
msgstr ""
"默认情况下，Python 源码文件的编码是 UTF-8。这种编码支持世界上大多数语言的字符，可以用于字符串字面值、变量、函数名及注释 —— "
"尽管标准库只用常规的 ASCII 字符作为变量名或函数名，可移植代码都应遵守此约定。要正确显示这些字符，编辑器必须能识别 UTF-8 "
"编码，而且必须使用支持文件中所有字符的字体。"

#: ../../tutorial/interpreter.rst:140
msgid ""
"To declare an encoding other than the default one, a special comment line "
"should be added as the *first* line of the file.  The syntax is as follows::"
msgstr "如果不使用默认编码，则要声明文件的编码，文件的 *第一* 行要写成特殊注释。句法如下："

#: ../../tutorial/interpreter.rst:145
msgid ""
"where *encoding* is one of the valid :mod:`codecs` supported by Python."
msgstr "其中，*encoding* 可以是 Python 支持的任意一种 :mod:`codecs`。"

#: ../../tutorial/interpreter.rst:147
msgid ""
"For example, to declare that Windows-1252 encoding is to be used, the first "
"line of your source code file should be::"
msgstr "比如，声明使用 Windows-1252 编码，源码文件要写成："

#: ../../tutorial/interpreter.rst:152
msgid ""
"One exception to the *first line* rule is when the source code starts with a"
" :ref:`UNIX \"shebang\" line <tut-scripts>`.  In this case, the encoding "
"declaration should be added as the second line of the file.  For example::"
msgstr ""
"*第一行* 的规则也有一种例外情况，源码以 :ref:`UNIX \"shebang\" 行 <tut-scripts>` "
"开头。此时，编码声明要写在文件的第二行。例如："

#: ../../tutorial/interpreter.rst:160
msgid "Footnotes"
msgstr "备注"

#: ../../tutorial/interpreter.rst:161
msgid ""
"On Unix, the Python 3.x interpreter is by default not installed with the "
"executable named ``python``, so that it does not conflict with a "
"simultaneously installed Python 2.x executable."
msgstr ""
"Unix 系统中，为了不与同时安装的 Python 2.x 冲突，Python 3.x 解释器默认安装的执行文件名不是 ``python``。"