Commit 539f239e authored by R David Murray's avatar R David Murray

#14766: Reflow the altered paragraphs.

parent 9075d8b7
...@@ -12,8 +12,8 @@ ...@@ -12,8 +12,8 @@
The :mod:`datetime` module supplies classes for manipulating dates and times in The :mod:`datetime` module supplies classes for manipulating dates and times in
both simple and complex ways. While date and time arithmetic is supported, the both simple and complex ways. While date and time arithmetic is supported, the
focus of the implementation is on efficient attribute extraction for output focus of the implementation is on efficient attribute extraction for output
formatting and manipulation. For related formatting and manipulation. For related functionality, see also the
functionality, see also the :mod:`time` and :mod:`calendar` modules. :mod:`time` and :mod:`calendar` modules.
There are two kinds of date and time objects: "naive" and "aware". There are two kinds of date and time objects: "naive" and "aware".
...@@ -25,22 +25,21 @@ interpretation [#]_. ...@@ -25,22 +25,21 @@ interpretation [#]_.
A naive object does not contain enough information to unambiguously locate A naive object does not contain enough information to unambiguously locate
itself relative to other date/time objects. Whether a naive object represents itself relative to other date/time objects. Whether a naive object represents
Coordinated Universal Time (UTC), Coordinated Universal Time (UTC), local time, or time in some other timezone is
local time, or time in some other timezone is purely up to the program, just purely up to the program, just like it is up to the program whether a
like it's up to the program whether a particular number represents metres, particular number represents metres, miles, or mass. Naive objects are easy to
miles, or mass. Naive objects are easy to understand and to understand and to work with, at the cost of ignoring some aspects of reality.
work with, at the cost of ignoring some aspects of reality.
For applications requiring aware objects, :class:`.datetime` and :class:`.time`
For applications requiring aware objects, :class:`.datetime` and :class:`.time` objects objects have an optional time zone information attribute, :attr:`tzinfo`, that
have an optional time zone information attribute, :attr:`tzinfo`, that can be can be set to an instance of a subclass of the abstract :class:`tzinfo` class.
set to an instance of a subclass of the abstract :class:`tzinfo` class. These These :class:`tzinfo` objects capture information about the offset from UTC
:class:`tzinfo` objects capture information about the offset from UTC time, the time, the time zone name, and whether Daylight Saving Time is in effect. Note
time zone name, and whether Daylight Saving Time is in effect. Note that only that only one concrete :class:`tzinfo` class, the :class:`timezone` class, is
one concrete :class:`tzinfo` class, the :class:`timezone` class, is supplied by the supplied by the :mod:`datetime` module. The :class:`timezone` class can
:mod:`datetime` module. The :class:`timezone` class can represent simple represent simple timezones with fixed offset from UTC, such as UTC itself or
timezones with fixed offset from UTC such as UTC itself or North American EST and North American EST and EDT timezones. Supporting timezones at deeper levels of
EDT timezones. Supporting timezones at deeper levels of detail is detail is up to the application. The rules for time adjustment across the
up to the application. The rules for time adjustment across the
world are more political than rational, change frequently, and there is no world are more political than rational, change frequently, and there is no
standard suitable for every application aside from UTC. standard suitable for every application aside from UTC.
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