bpo-33400: Clarified documentation to indicate no strict adherence to ISO 8601. (GH-6702)
diff --git a/Doc/howto/logging.rst b/Doc/howto/logging.rst
index f8b78b6..e9e5580 100644
--- a/Doc/howto/logging.rst
+++ b/Doc/howto/logging.rst
@@ -296,9 +296,9 @@
2010-12-12 11:41:42,612 is when this event was logged.
-The default format for date/time display (shown above) is ISO8601. If you need
-more control over the formatting of the date/time, provide a *datefmt*
-argument to ``basicConfig``, as in this example::
+The default format for date/time display (shown above) is like ISO8601 or
+RFC 3339. If you need more control over the formatting of the date/time, provide
+a *datefmt* argument to ``basicConfig``, as in this example::
import logging
logging.basicConfig(format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
diff --git a/Doc/library/logging.config.rst b/Doc/library/logging.config.rst
index 1f9d7c7..b500761 100644
--- a/Doc/library/logging.config.rst
+++ b/Doc/library/logging.config.rst
@@ -790,10 +790,10 @@
The ``format`` entry is the overall format string, and the ``datefmt`` entry is
the :func:`strftime`\ -compatible date/time format string. If empty, the
-package substitutes ISO8601 format date/times, which is almost equivalent to
-specifying the date format string ``'%Y-%m-%d %H:%M:%S'``. The ISO8601 format
-also specifies milliseconds, which are appended to the result of using the above
-format string, with a comma separator. An example time in ISO8601 format is
+package substitutes ISO8601-style format date/times, which is almost equivalent to
+specifying the date format string ``'%Y-%m-%d %H:%M:%S'``. This format also
+specifies milliseconds, which are appended to the result of using the above
+format string, with a comma separator. An example time in this format is
``2003-01-23 00:29:50,411``.
The ``class`` entry is optional. It indicates the name of the formatter's class
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index f9eda17..9a54bf9 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -515,8 +515,9 @@
Returns a new instance of the :class:`Formatter` class. The instance is
initialized with a format string for the message as a whole, as well as a
format string for the date/time portion of a message. If no *fmt* is
- specified, ``'%(message)s'`` is used. If no *datefmt* is specified, the
- ISO8601 date format is used.
+ specified, ``'%(message)s'`` is used. If no *datefmt* is specified, an
+ ISO8601-like (or RFC3339-like) date format is used. See the
+ :meth:`formatTime` documentation for more details.
The *style* parameter can be one of '%', '{' or '$' and determines how
the format string will be merged with its data: using one of %-formatting,
@@ -556,8 +557,8 @@
formatters to provide for any specific requirement, but the basic behavior
is as follows: if *datefmt* (a string) is specified, it is used with
:func:`time.strftime` to format the creation time of the
- record. Otherwise, the ISO8601 format is used. The resulting string is
- returned.
+ record. Otherwise, an ISO8601-like (or RDC 3339-like) format is used. The
+ resulting string is returned.
This function uses a user-configurable function to convert the creation
time to a tuple. By default, :func:`time.localtime` is used; to change
@@ -568,7 +569,7 @@
attribute in the ``Formatter`` class.
.. versionchanged:: 3.3
- Previously, the default ISO 8601 format was hard-coded as in this
+ Previously, the default ISO8601-like format was hard-coded as in this
example: ``2010-09-06 22:38:15,292`` where the part before the comma is
handled by a strptime format string (``'%Y-%m-%d %H:%M:%S'``), and the
part after the comma is a millisecond value. Because strptime does not