@@ -11,7 +11,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Python 3.15\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-10-01 19:07+0000\n"
+"POT-Creation-Date: 2026-10-09 19:08+0000\n"
 "PO-Revision-Date: 2025-09-16 00:00+0000\n"
 "Last-Translator: python-doc bot, 2025\n"
 "Language-Team: Japanese (https://app.transifex.com/python-doc/teams/5390/"
@@ -77,7 +77,7 @@ msgstr ""
 msgid "You probably do not want to use this function."
 msgstr "おそらく、あなたはこの関数を使いたくないでしょう。"
 
-#: ../../c-api/slice.rst:44 ../../c-api/slice.rst:75
+#: ../../c-api/slice.rst:44 ../../c-api/slice.rst:76
 msgid ""
 "The parameter type for the *slice* parameter was ``PySliceObject*`` before."
 msgstr "以前は、*slice* 引数の型は ``PySliceObject*`` でした。"
@@ -88,45 +88,41 @@ msgid ""
 "stop, and step indices from the slice object *slice* assuming a sequence of "
 "length *length*, and store the length of the slice in *slicelength*.  Out of "
 "bounds indices are clipped in a manner consistent with the handling of "
-"normal slices."
+"normal slices. *length* must not be negative."
 msgstr ""
-":c:func:`PySlice_GetIndices` の便利な代替です。  *slice* における、*start*,  "
-"*stop* および *step* のインデクス値を取得をします。シーケンスの長さを "
-"*length* 、スライスの長さを *slicelength* に格納します。境界外のインデクスは"
-"通常のスライスと一貫した方法でクリップされます。"
 
-#: ../../c-api/slice.rst:57
+#: ../../c-api/slice.rst:58
 msgid "Return ``0`` on success and ``-1`` on error with an exception set."
 msgstr ""
 
-#: ../../c-api/slice.rst:60
+#: ../../c-api/slice.rst:61
 msgid ""
 "This function is considered not safe for resizable sequences. Its invocation "
 "should be replaced by a combination of :c:func:`PySlice_Unpack` and :c:func:"
 "`PySlice_AdjustIndices` where ::"
 msgstr ""
 
-#: ../../c-api/slice.rst:64
+#: ../../c-api/slice.rst:65
 msgid ""
 "if (PySlice_GetIndicesEx(slice, length, &start, &stop, &step, &slicelength) "
 "< 0) {\n"
 "    // return error\n"
 "}"
 msgstr ""
 
-#: ../../c-api/slice.rst:68
+#: ../../c-api/slice.rst:69
 msgid "is replaced by ::"
 msgstr ""
 
-#: ../../c-api/slice.rst:70
+#: ../../c-api/slice.rst:71
 msgid ""
 "if (PySlice_Unpack(slice, &start, &stop, &step) < 0) {\n"
 "    // return error\n"
 "}\n"
 "slicelength = PySlice_AdjustIndices(length, &start, &stop, step);"
 msgstr ""
 
-#: ../../c-api/slice.rst:79
+#: ../../c-api/slice.rst:80
 msgid ""
 "If ``Py_LIMITED_API`` is not set or set to the value between ``0x03050400`` "
 "and ``0x03060000`` (not including) or ``0x03060100`` or higher :c:func:`!"
@@ -135,14 +131,14 @@ msgid ""
 "*stop* and *step* are evaluated more than once."
 msgstr ""
 
-#: ../../c-api/slice.rst:86
+#: ../../c-api/slice.rst:87
 msgid ""
 "If ``Py_LIMITED_API`` is set to the value less than ``0x03050400`` or "
 "between ``0x03060000`` and ``0x03060100`` (not including) :c:func:`!"
 "PySlice_GetIndicesEx` is a deprecated function."
 msgstr ""
 
-#: ../../c-api/slice.rst:94
+#: ../../c-api/slice.rst:95
 msgid ""
 "Extract the start, stop and step data members from a slice object as C "
 "integers.  Silently reduce values larger than ``PY_SSIZE_T_MAX`` to "
@@ -151,34 +147,40 @@ msgid ""
 "less than ``-PY_SSIZE_T_MAX`` to ``-PY_SSIZE_T_MAX``."
 msgstr ""
 
-#: ../../c-api/slice.rst:100
+#: ../../c-api/slice.rst:101
 msgid "Return ``-1`` with an exception set on error, ``0`` on success."
 msgstr ""
 
-#: ../../c-api/slice.rst:107
+#: ../../c-api/slice.rst:108
 msgid ""
 "Adjust start/end slice indices assuming a sequence of the specified length. "
 "Out of bounds indices are clipped in a manner consistent with the handling "
 "of normal slices."
 msgstr ""
 
-#: ../../c-api/slice.rst:111
+#: ../../c-api/slice.rst:112
+msgid ""
+"*length* must not be negative. *step* must not be zero and must not be less "
+"than ``-PY_SSIZE_T_MAX``, as guaranteed by :c:func:`PySlice_Unpack`."
+msgstr ""
+
+#: ../../c-api/slice.rst:116
 msgid ""
 "Return the length of the slice.  Always successful.  Doesn't call Python "
 "code."
 msgstr ""
 
-#: ../../c-api/slice.rst:118
+#: ../../c-api/slice.rst:123
 msgid "Ellipsis Object"
 msgstr "Ellipsis オブジェクト"
 
-#: ../../c-api/slice.rst:123
+#: ../../c-api/slice.rst:128
 msgid ""
 "The type of Python :const:`Ellipsis` object.  Same as :class:`types."
 "EllipsisType` in the Python layer."
 msgstr ""
 
-#: ../../c-api/slice.rst:129
+#: ../../c-api/slice.rst:134
 msgid ""
 "The Python ``Ellipsis`` object.  This object has no methods.  Like :c:data:"
 "`Py_None`, it is an :term:`immortal` singleton object."
@@ -187,6 +189,6 @@ msgstr ""
 "ん。 :c:data:`Py_None` と同様、これは :term:`immortal` でシングルトンなオブ"
 "ジェクトです。"
 
-#: ../../c-api/slice.rst:132
+#: ../../c-api/slice.rst:137
 msgid ":c:data:`Py_Ellipsis` is immortal."
 msgstr ":c:data:`Py_Ellipsis` は immortal です。"
@@ -11,7 +11,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Python 3.15\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-09-19 16:52+0000\n"
+"POT-Creation-Date: 2026-10-09 19:08+0000\n"
 "PO-Revision-Date: 2025-09-16 00:01+0000\n"
 "Last-Translator: python-doc bot, 2025\n"
 "Language-Team: Japanese (https://app.transifex.com/python-doc/teams/5390/"
 
@@ -11,7 +11,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Python 3.15\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-10-01 19:07+0000\n"
+"POT-Creation-Date: 2026-10-09 19:08+0000\n"
 "PO-Revision-Date: 2025-09-16 00:01+0000\n"
 "Last-Translator: python-doc bot, 2026\n"
 "Language-Team: Japanese (https://app.transifex.com/python-doc/teams/5390/"
@@ -387,7 +387,7 @@ msgstr "プロセスの制御端末に対応するファイル名を返します
 #: ../../library/os.rst:4471 ../../library/os.rst:4480
 #: ../../library/os.rst:4489 ../../library/os.rst:4497
 #: ../../library/os.rst:4506 ../../library/os.rst:4515
-#: ../../library/os.rst:4587 ../../library/os.rst:4650
+#: ../../library/os.rst:4588 ../../library/os.rst:4650
 #: ../../library/os.rst:4660 ../../library/os.rst:4678
 #: ../../library/os.rst:4687 ../../library/os.rst:4697
 #: ../../library/os.rst:4707 ../../library/os.rst:4717
@@ -5647,9 +5647,9 @@ msgstr ""
 #: ../../library/os.rst:4555
 msgid ""
 "If *clockid* is :const:`time.CLOCK_REALTIME`, a settable system-wide real-"
-"time clock is used. If system clock is changed, timer setting need to be "
-"updated. To cancel timer when system clock is changed, see :const:"
-"`TFD_TIMER_CANCEL_ON_SET`."
+"time clock is used. If the system clock is changed, the timer setting needs "
+"to be updated. To cancel the timer when the system clock is changed, see :"
+"const:`TFD_TIMER_CANCEL_ON_SET`."
 msgstr ""
 
 #: ../../library/os.rst:4560
@@ -5661,84 +5661,82 @@ msgstr ""
 
 #: ../../library/os.rst:4564
 msgid ""
-"If *clockid* is :const:`time.CLOCK_BOOTTIME`, same as :const:`time."
+"If *clockid* is :const:`time.CLOCK_BOOTTIME`, it is the same as :const:`time."
 "CLOCK_MONOTONIC` except it includes any time that the system is suspended."
 msgstr ""
 
-#: ../../library/os.rst:4567
+#: ../../library/os.rst:4568
 msgid ""
 "The file descriptor's behaviour can be modified by specifying a *flags* "
 "value. Any of the following variables may be used, combined using bitwise OR "
 "(the ``|`` operator):"
 msgstr ""
 
-#: ../../library/os.rst:4571
+#: ../../library/os.rst:4572
 msgid ":const:`TFD_NONBLOCK`"
 msgstr ""
 
-#: ../../library/os.rst:4572
+#: ../../library/os.rst:4573
 msgid ":const:`TFD_CLOEXEC`"
 msgstr ""
 
-#: ../../library/os.rst:4574
+#: ../../library/os.rst:4575
 msgid ""
 "If :const:`TFD_NONBLOCK` is not set as a flag, :func:`read` blocks until the "
-"timer expires. If it is set as a flag, :func:`read` doesn't block, but If "
+"timer expires. If it is set as a flag, :func:`read` doesn't block, but if "
 "there hasn't been an expiration since the last call to read, :func:`read` "
-"raises :class:`OSError` with ``errno`` is set to :const:`errno.EAGAIN`."
+"raises :class:`OSError` with ``errno`` set to :const:`errno.EAGAIN`."
 msgstr ""
 
-#: ../../library/os.rst:4580
+#: ../../library/os.rst:4581
 msgid ":const:`TFD_CLOEXEC` is always set by Python automatically."
 msgstr ""
 
-#: ../../library/os.rst:4582
+#: ../../library/os.rst:4583
 msgid ""
 "The file descriptor must be closed with :func:`os.close` when it is no "
 "longer needed, or else the file descriptor will be leaked."
 msgstr ""
 
-#: ../../library/os.rst:4585
+#: ../../library/os.rst:4586
 msgid "The :manpage:`timerfd_create(2)` man page."
 msgstr ""
 
-#: ../../library/os.rst:4594
+#: ../../library/os.rst:4595
 msgid ""
 "Alter a timer file descriptor's internal timer. This function operates the "
 "same interval timer as :func:`timerfd_settime_ns`."
 msgstr ""
 
-#: ../../library/os.rst:4597
+#: ../../library/os.rst:4598
 msgid "*fd* must be a valid timer file descriptor."
 msgstr ""
 
-#: ../../library/os.rst:4599
+#: ../../library/os.rst:4600
 msgid ""
 "The timer's behaviour can be modified by specifying a *flags* value. Any of "
 "the following variables may be used, combined using bitwise OR (the ``|`` "
 "operator):"
 msgstr ""
 
-#: ../../library/os.rst:4603
+#: ../../library/os.rst:4604
 msgid ":const:`TFD_TIMER_ABSTIME`"
 msgstr ""
 
-#: ../../library/os.rst:4604
+#: ../../library/os.rst:4605
 msgid ":const:`TFD_TIMER_CANCEL_ON_SET`"
 msgstr ""
 
-#: ../../library/os.rst:4606
+#: ../../library/os.rst:4607
 msgid ""
 "The timer is disabled by setting *initial* to zero (``0``). If *initial* is "
-"equal to or greater than zero, the timer is enabled. If *initial* is less "
-"than zero, it raises an :class:`OSError` exception with ``errno`` set to :"
-"const:`errno.EINVAL`"
+"greater than zero, the timer is enabled. If *initial* is less than zero, it "
+"raises an :class:`OSError` exception with ``errno`` set to :const:`errno."
+"EINVAL`."
 msgstr ""
 
-#: ../../library/os.rst:4611
-msgid ""
-"By default the timer will fire when *initial* seconds have elapsed. (If "
-"*initial* is zero, timer will fire immediately.)"
+#: ../../library/os.rst:4612
+msgid "By default the timer will fire when *initial* seconds have elapsed."
 msgstr ""
 
 #: ../../library/os.rst:4614
@@ -5754,16 +5752,16 @@ msgid ""
 "zero, the timer only fires once, on the initial expiration. If *interval* is "
 "greater than zero, the timer fires every time *interval* seconds have "
 "elapsed since the previous expiration. If *interval* is less than zero, it "
-"raises :class:`OSError` with ``errno`` set to :const:`errno.EINVAL`"
+"raises :class:`OSError` with ``errno`` set to :const:`errno.EINVAL`."
 msgstr ""
 
 #: ../../library/os.rst:4625
 msgid ""
 "If the :const:`TFD_TIMER_CANCEL_ON_SET` flag is set along with :const:"
 "`TFD_TIMER_ABSTIME` and the clock for this timer is :const:`time."
 "CLOCK_REALTIME`, the timer is marked as cancelable if the real-time clock is "
-"changed discontinuously. Reading the descriptor is aborted with the error "
-"ECANCELED."
+"changed discontinuously. Reading the descriptor is aborted with the error :"
+"const:`errno.ECANCELED`."
 msgstr ""
 
 #: ../../library/os.rst:4631