conversion.po

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msgid ""
msgstr ""
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#: ../../c-api/conversion.rst:6
msgid "String conversion and formatting"
msgstr "字符串转换与格式化"

#: ../../c-api/conversion.rst:8
msgid "Functions for number conversion and formatted string output."
msgstr "用于数字转换和格式化字符串输出的函数"

#: ../../c-api/conversion.rst:13
msgid ""
"Output not more than *size* bytes to *str* according to the format string "
"*format* and the extra arguments. See the Unix man page "
":manpage:`snprintf(3)`."
msgstr ""
"根据格式字符串 *format* 和额外参数，输出不超过 *size* 个字节到 *str*。参见 Unix 手册页面 "
":manpage:`snprintf(3)` 了解更多。"

#: ../../c-api/conversion.rst:19
msgid ""
"Output not more than *size* bytes to *str* according to the format string "
"*format* and the variable argument list *va*. Unix man page "
":manpage:`vsnprintf(3)`."
msgstr ""
"根据格式字符串 *format* 和变量参数列表 *va*，输出不超过 *size* 个字节到 *str*。参见 Unix 手册页面 "
":manpage:`vsnprintf(3)` 了解更多。"

#: ../../c-api/conversion.rst:23
msgid ""
":c:func:`PyOS_snprintf` and :c:func:`PyOS_vsnprintf` wrap the Standard C "
"library functions :c:func:`snprintf` and :c:func:`vsnprintf`. Their purpose "
"is to guarantee consistent behavior in corner cases, which the Standard C "
"functions do not."
msgstr ""
":c:func:`PyOS_snprintf` 和 :c:func:`PyOS_vsnprintf` 包装 C 标准库函数 "
":c:func:`snprintf` 和 :c:func:`vsnprintf`。它们的目的是保证在极端情况下的一致行为，而标准 C 的函数则不然。"

#: ../../c-api/conversion.rst:28
msgid ""
"The wrappers ensure that ``str[size-1]`` is always ``'\\0'`` upon return. "
"They never write more than *size* bytes (including the trailing ``'\\0'``) "
"into str. Both functions require that ``str != NULL``, ``size > 0``, "
"``format != NULL`` and ``size < INT_MAX``. Note that this means there is no "
"equivalent to the C99 ``n = snprintf(NULL, 0, ...)`` which would determine "
"the necessary buffer size."
msgstr ""
"此包装器会确保 ``str[size-1]`` 在返回时始终为 ``'\\0'``。它们从不写入超过 *size* 字节 (包括末尾的 "
"``'\\0'``) 到 str。两个函数都要求 ``str != NULL``, ``size > 0``, ``format != NULL`` 且"
" ``size < INT_MAX``。请注意这意味着不存在可确定所需缓冲区大小的 C99 ``n = snprintf(NULL, 0, ...)``"
" 的等价物。"

#: ../../c-api/conversion.rst:34
msgid ""
"The return value (*rv*) for these functions should be interpreted as "
"follows:"
msgstr "这些函数的返回值（ *rv* ）应按照以下规则被解释："

#: ../../c-api/conversion.rst:36
msgid ""
"When ``0 <= rv < size``, the output conversion was successful and *rv* "
"characters were written to *str* (excluding the trailing ``'\\0'`` byte at "
"``str[rv]``)."
msgstr ""
"当 ``0 <= rv < size`` 时，输出转换即成功并将 *rv* 个字符写入到 *str* (不包括末尾 ``str[rv]`` 位置的 "
"``'\\0'`` 字节)。"

#: ../../c-api/conversion.rst:40
msgid ""
"When ``rv >= size``, the output conversion was truncated and a buffer with "
"``rv + 1`` bytes would have been needed to succeed. ``str[size-1]`` is "
"``'\\0'`` in this case."
msgstr ""
"当 ``rv >= size`` 时，输出转换会被截断并且需要一个具有 ``rv + 1`` 字节的缓冲区才能成功执行。在此情况下 "
"``str[size-1]`` 为 ``'\\0'``。"

#: ../../c-api/conversion.rst:44
msgid ""
"When ``rv < 0``, the output conversion failed and ``str[size-1]`` is "
"``'\\0'`` in this case too, but the rest of *str* is undefined. The exact "
"cause of the error depends on the underlying platform."
msgstr ""
"当 ``rv < 0`` 时，在此场景下输出转换将失败并且 ``str[size-1]`` 为 ``'\\0'``，但 *str* "
"的其余部分是未定义的。错误的确切原因取决于底层平台。"

#: ../../c-api/conversion.rst:49
msgid ""
"The following functions provide locale-independent string to number "
"conversions."
msgstr "以下函数提供与语言环境无关的字符串到数字转换。"

#: ../../c-api/conversion.rst:53
msgid ""
"Convert the initial part of the string in ``str`` to an :c:expr:`unsigned "
"long` value according to the given ``base``, which must be between ``2`` and"
" ``36`` inclusive, or be the special value ``0``."
msgstr ""
"根据给定的 ``base`` 将 ``str`` 中字符串的初始部分转换为 :c:expr:`unsigned long` 值，基数必须在 ``2`` "
"至 ``36`` 之间（包括边界值），或者为特殊值 ``0``。"

#: ../../c-api/conversion.rst:57
msgid ""
"Leading white space and case of characters are ignored.  If ``base`` is zero"
" it looks for a leading ``0b``, ``0o`` or ``0x`` to tell which base.  If "
"these are absent it defaults to ``10``.  Base must be 0 or between 2 and 36 "
"(inclusive).  If ``ptr`` is non-``NULL`` it will contain a pointer to the "
"end of the scan."
msgstr ""
"空白前缀和字符大小写将被忽略。如果 ``base`` 为零则会查找 ``0b``、``0o`` 或 ``0x`` 前缀以确定基数。如果没有则默认基数为 "
"``10``。基数必须为 0 或在 2 和 36 之间（包括边界值）。如果 ``ptr`` 不为 ``NULL`` "
"则它将包含一个指向扫描结束位置的指针。"

#: ../../c-api/conversion.rst:63
msgid ""
"If the converted value falls out of range of corresponding return type, "
"range error occurs (:c:data:`errno` is set to :c:macro:`!ERANGE`) and "
":c:macro:`!ULONG_MAX` is returned.  If no conversion can be performed, ``0``"
" is returned."
msgstr ""
"如果转换后的值不在对应返回类型的取值范围之内，则会发生取值范围错误 (:c:data:`errno` 被设为 :c:macro:`!ERANGE`) "
"并返回 :c:macro:`!ULONG_MAX`。如果无法执行转换，则返回 ``0``。"

#: ../../c-api/conversion.rst:68
msgid "See also the Unix man page :manpage:`strtoul(3)`."
msgstr "另请参阅 Unix 手册页 :manpage:`strtoul(3)`。"

#: ../../c-api/conversion.rst:75
msgid ""
"Convert the initial part of the string in ``str`` to an :c:expr:`long` value"
" according to the given ``base``, which must be between ``2`` and ``36`` "
"inclusive, or be the special value ``0``."
msgstr ""
"根据给定的 ``base`` 将 ``str`` 中字符串的初始部分转换为 :c:expr:`long` 值，基数必须在 ``2`` 至 ``36`` "
"之间（包括边界值），或者为特殊值 ``0``。"

#: ../../c-api/conversion.rst:79
msgid ""
"Same as :c:func:`PyOS_strtoul`, but return a :c:expr:`long` value instead "
"and :c:macro:`LONG_MAX` on overflows."
msgstr ""
"类似于 :c:func:`PyOS_strtoul`，但改为返回 :c:expr:`long` 值，溢出时返回 :c:macro:`LONG_MAX`。"

#: ../../c-api/conversion.rst:82
msgid "See also the Unix man page :manpage:`strtol(3)`."
msgstr "另请参阅 Unix 手册页 :manpage:`strtol(3)`。"

#: ../../c-api/conversion.rst:89
msgid ""
"Convert a string ``s`` to a :c:expr:`double`, raising a Python exception on "
"failure.  The set of accepted strings corresponds to the set of strings "
"accepted by Python's :func:`float` constructor, except that ``s`` must not "
"have leading or trailing whitespace. The conversion is independent of the "
"current locale."
msgstr ""
"将字符串 ``s`` 转换为 :c:expr:`double` 类型，失败时会引发 Python 异常。接受的字符串集合对应于可被 Python 的 "
":func:`float` 构造器所接受的字符串集合，除了 ``s`` 必须没有前导或尾随空格。转换独立于当前的语言区域。"

#: ../../c-api/conversion.rst:95
msgid ""
"If ``endptr`` is ``NULL``, convert the whole string.  Raise "
":exc:`ValueError` and return ``-1.0`` if the string is not a valid "
"representation of a floating-point number."
msgstr ""
"如果 ``endptr`` 是 ``NULL``，则转换整个字符串。如果字符串不是浮点数的有效表示，则引发 :exc:`ValueError` 并返回 "
"``-1.0``。"

#: ../../c-api/conversion.rst:99
msgid ""
"If endptr is not ``NULL``, convert as much of the string as possible and set"
" ``*endptr`` to point to the first unconverted character.  If no initial "
"segment of the string is the valid representation of a floating-point "
"number, set ``*endptr`` to point to the beginning of the string, raise "
"ValueError, and return ``-1.0``."
msgstr ""
"如果 ``endptr`` 不是 ``NULL``，尽可能多的转换字符串并将 ``*endptr`` "
"设置为指向第一个未转换的字符。如果字符串的初始段不是浮点数的有效的表达方式，将 ``*endptr`` 设置为指向字符串的开头，引发 "
"ValueError 异常，并且返回 ``-1.0``。"

#: ../../c-api/conversion.rst:106
msgid ""
"If ``s`` represents a value that is too large to store in a float (for "
"example, ``\"1e500\"`` is such a string on many platforms) then if "
"``overflow_exception`` is ``NULL`` return :c:macro:`!INFINITY` (with an "
"appropriate sign) and don't set any exception.  Otherwise, "
"``overflow_exception`` must point to a Python exception object; raise that "
"exception and return ``-1.0``.  In both cases, set ``*endptr`` to point to "
"the first character after the converted value."
msgstr ""

#: ../../c-api/conversion.rst:114
msgid ""
"If any other error occurs during the conversion (for example an out-of-"
"memory error), set the appropriate Python exception and return ``-1.0``."
msgstr "如果在转换期间发生任何其他错误（比如一个内存不足的错误），设置适当的 Python 异常并且返回 ``-1.0``。"

#: ../../c-api/conversion.rst:123
msgid ""
"Convert a :c:expr:`double` *val* to a string using supplied *format_code*, "
"*precision*, and *flags*."
msgstr ""
"将 :c:expr:`double` *val* 转换为一个使用给定的 *format_code*, *precision* 和 *flags* "
"的字符串。"

#: ../../c-api/conversion.rst:126
msgid ""
"*format_code* must be one of ``'e'``, ``'E'``, ``'f'``, ``'F'``, ``'g'``, "
"``'G'`` or ``'r'``.  For ``'r'``, the supplied *precision* must be 0 and is "
"ignored.  The ``'r'`` format code specifies the standard :func:`repr` "
"format."
msgstr ""
"*format_code* 必须是以下其中之一: ``'e'``, ``'E'``, ``'f'``, ``'F'``, ``'g'``, "
"``'G'`` 或 ``'r'``。 对于 ``'r'``，提供的 *precision* 必须为 0 且会被忽略。 ``'r'`` 格式码指定了标准 "
":func:`repr` 格式。"

#: ../../c-api/conversion.rst:131
msgid "*flags* can be zero or more of the following values or-ed together:"
msgstr "*flags* 可以为零或多个下列值进行或运算的结果："

#: ../../c-api/conversion.rst:137
msgid ""
"Always precede the returned string with a sign character, even if *val* is "
"non-negative."
msgstr "总是在返回的字符串前加一个正负号字符，即使 *val* 为非负数。"

#: ../../c-api/conversion.rst:142
msgid "Ensure that the returned string will not look like an integer."
msgstr "确保返回的字符串看起来不像是一个整数。"

#: ../../c-api/conversion.rst:146
msgid ""
"Apply \"alternate\" formatting rules. See the documentation for the "
":c:func:`PyOS_snprintf` ``'#'`` specifier for details."
msgstr "应用“替代”格式化规则。请参阅 :c:func:`PyOS_snprintf` ``'#'`` 格式符的文档了解详情。"

#: ../../c-api/conversion.rst:152
msgid "Negative zero is converted to positive zero."
msgstr "负零将被转换为正零。"

#: ../../c-api/conversion.rst:156
msgid ""
"If *ptype* is non-``NULL``, then the value it points to will be set to one "
"of the following constants depending on the type of *val*:"
msgstr "如果 *ptype* 不为 ``NULL``，则它指向的值将根据 *val* 的类型被设为以下常量之一："

#: ../../c-api/conversion.rst:163
msgid "*\\*ptype*"
msgstr "*\\*ptype*"

#: ../../c-api/conversion.rst:164
msgid "type of *val*"
msgstr "*val* 的类型"

#: ../../c-api/conversion.rst:166
msgid "finite number"
msgstr "有限数字"

#: ../../c-api/conversion.rst:168
msgid "infinite number"
msgstr "无穷大数字"

#: ../../c-api/conversion.rst:170
msgid "not a number"
msgstr "非数字"

#: ../../c-api/conversion.rst:172
msgid ""
"The return value is a pointer to *buffer* with the converted string or "
"``NULL`` if the conversion failed. The caller is responsible for freeing the"
" returned string by calling :c:func:`PyMem_Free`."
msgstr ""
"返回值是一个指向包含转换后字符串的 *buffer* 的指针，如果转换失败则为 ``NULL``。调用方要负责调用 "
":c:func:`PyMem_Free` 来释放返回的字符串。"

#: ../../c-api/conversion.rst:182
msgid ""
"Case insensitive comparison of strings. These functions work almost "
"identically to :c:func:`!strcmp` and :c:func:`!strncmp` (respectively), "
"except that they ignore the case of ASCII characters."
msgstr ""
"不区分大小写的字符串比较。这些函数的工作方式（分别）与 :c:func:`!strcmp` 和 :c:func:`!strncmp` "
"几乎一样，只是它们会忽略 ASCII 字符的大小写。"

#: ../../c-api/conversion.rst:186
msgid ""
"Return ``0`` if the strings are equal, a negative value if *str1* sorts "
"lexicographically before *str2*, or a positive value if it sorts after."
msgstr "如果字符串相等则返回 ``0``，如果 *str1* 的词典排序在 *str2* 之前则返回负值，或者如果排序在其后则返回正值。"

#: ../../c-api/conversion.rst:189
msgid ""
"In the *str1* or *str2* arguments, a NUL byte marks the end of the string. "
"For :c:func:`!PyOS_mystrnicmp`, the *size* argument gives the maximum size "
"of the string, as if NUL was present at the index given by *size*."
msgstr ""
"在 *str1* 或 *str2* 参数中，NUL 字符表示字符串结束。对于 :c:func:`!PyOS_mystrnicmp`，*size* "
"参数给出了字符串的最大长度，就像 NUL 出现在由 *size* 给出的索引位置。"

#: ../../c-api/conversion.rst:193
msgid "These functions do not use the locale."
msgstr "这些函数不使用语言区域设置。"

#: ../../c-api/conversion.rst:199
msgid "Case insensitive comparison of strings."
msgstr "忽略大小写的字符串比较。"

#: ../../c-api/conversion.rst:201
msgid ""
"On Windows, these are aliases of :c:func:`!stricmp` and :c:func:`!strnicmp`,"
" respectively."
msgstr "在 Windows 上，它们分别是 :c:func:`!stricmp` 和 :c:func:`!strnicmp` 的别名。"

#: ../../c-api/conversion.rst:204
msgid ""
"On other platforms, they are aliases of :c:func:`PyOS_mystricmp` and "
":c:func:`PyOS_mystrnicmp`, respectively."
msgstr ""
"在其他平台上，它们分别是 :c:func:`PyOS_mystricmp` 和 :c:func:`PyOS_mystrnicmp` 的别名。"

#: ../../c-api/conversion.rst:209
msgid "Character classification and conversion"
msgstr "字符分类与转换"

#: ../../c-api/conversion.rst:211
msgid ""
"The following macros provide locale-independent (unlike the C standard "
"library ``ctype.h``) character classification and conversion. The argument "
"must be a signed or unsigned :c:expr:`char`."
msgstr ""
"下列宏提供了独立于语言区域 (不同于 C 标准库 ``ctype.h``) 的字符分类与转换。其参数必须是一个有符号或无符号的 "
":c:expr:`char` 值。"

#: ../../c-api/conversion.rst:218
msgid "Return true if the character *c* is an alphanumeric character."
msgstr "如果字符 *c* 为字母数字类字符则返回真值。"

#: ../../c-api/conversion.rst:223
msgid ""
"Return true if the character *c* is an alphabetic character (``a-z`` and "
"``A-Z``)."
msgstr "如果字符 *c* 为字母类字符 (``a-z`` 和 ``A-Z``) 则返回真值。"

#: ../../c-api/conversion.rst:228
msgid "Return true if the character *c* is a decimal digit (``0-9``)."
msgstr "如果字符 *c* 为十进制数码 (``0-9``) 则返回真值。"

#: ../../c-api/conversion.rst:233
msgid ""
"Return true if the character *c* is a lowercase ASCII letter (``a-z``)."
msgstr "如果字符 *c* 为小写 ASCII 字母 (``a-z``) 则返回真值。"

#: ../../c-api/conversion.rst:238
msgid ""
"Return true if the character *c* is an uppercase ASCII letter (``A-Z``)."
msgstr "如果字符 *c* 是一个大写 ASCII 字母 (``A-Z``) 则返回真值。"

#: ../../c-api/conversion.rst:243
msgid ""
"Return true if the character *c* is a whitespace character (space, tab, "
"carriage return, newline, vertical tab, or form feed)."
msgstr "如果字符 *c* 是一个空白字符 (空格符，制表符，回车符，换行符，垂直制表符或换页符) 则返回真值。"

#: ../../c-api/conversion.rst:249
msgid ""
"Return true if the character *c* is a hexadecimal digit (``0-9``, ``a-f``, "
"and ``A-F``)."
msgstr "如果字符 *c* 是一个十六进制数码 (``0-9``, ``a-f`` 和 ``A-F``) 则返回真值。"

#: ../../c-api/conversion.rst:255
msgid "Return the lowercase equivalent of the character *c*."
msgstr "返回字符 *c* 的小写形式。"

#: ../../c-api/conversion.rst:260
msgid "Return the uppercase equivalent of the character *c*."
msgstr "返回字符 *c* 的大写形式。"