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<H2><A NAME="SECTION0081010000000000000000">
6.10.1 Available Types</A>
</H2>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-1858' xml:id='l2h-1858' class="class">date</tt></b>
<dd>
  An idealized naive date, assuming the current Gregorian calendar
  always was, and always will be, in effect.
  Attributes: <tt class="member">year</tt>, <tt class="member">month</tt>, and <tt class="member">day</tt>.
</dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-1859' xml:id='l2h-1859' class="class">time</tt></b>
<dd>
  An idealized time, independent of any particular day, assuming
  that every day has exactly 24*60*60 seconds (there is no notion
  of "leap seconds" here).
  Attributes: <tt class="member">hour</tt>, <tt class="member">minute</tt>, <tt class="member">second</tt>,
              <tt class="member">microsecond</tt>, and <tt class="member">tzinfo</tt>.
</dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-1860' xml:id='l2h-1860' class="class">datetime</tt></b>
<dd>
  A combination of a date and a time.
  Attributes: <tt class="member">year</tt>, <tt class="member">month</tt>, <tt class="member">day</tt>,
              <tt class="member">hour</tt>, <tt class="member">minute</tt>, <tt class="member">second</tt>,
              <tt class="member">microsecond</tt>, and <tt class="member">tzinfo</tt>.
</dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-1861' xml:id='l2h-1861' class="class">timedelta</tt></b>
<dd>
  A duration expressing the difference between two <tt class="class">date</tt>,
  <tt class="class">time</tt>, or <tt class="class">datetime</tt> instances to microsecond
  resolution.
</dl>

<P>
<dl><dt><b><span class="typelabel">class</span>&nbsp;<tt id='l2h-1862' xml:id='l2h-1862' class="class">tzinfo</tt></b>
<dd>
  An abstract base class for time zone information objects.  These
  are used by the  <tt class="class">datetime</tt> and <tt class="class">time</tt> classes to
  provide a customizable notion of time adjustment (for example, to
  account for time zone and/or daylight saving time).
</dl>

<P>
Objects of these types are immutable.

<P>
Objects of the <tt class="class">date</tt> type are always naive.

<P>
An object <var>d</var> of type <tt class="class">time</tt> or <tt class="class">datetime</tt> may be
naive or aware.  <var>d</var> is aware if <code><var>d</var>.tzinfo</code> is not
<code>None</code> and <code><var>d</var>.tzinfo.utcoffset(<var>d</var>)</code> does not return
<code>None</code>.  If <code><var>d</var>.tzinfo</code> is <code>None</code>, or if
<code><var>d</var>.tzinfo</code> is not <code>None</code> but
<code><var>d</var>.tzinfo.utcoffset(<var>d</var>)</code> returns <code>None</code>, <var>d</var>
is naive.

<P>
The distinction between naive and aware doesn't apply to
<tt class="class">timedelta</tt> objects.

<P>
Subclass relationships:

<P>
<div class="verbatim"><pre>
object
    timedelta
    tzinfo
    time
    date
        datetime
</pre></div>

<P>

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	54
	55	<H2><A NAME="SECTION0081010000000000000000">
	56	6.10.1 Available Types</A>
	57	</H2>
	58
	59	<P>
	60	<dl><dt><b><span class="typelabel">class</span> <tt id='l2h-1858' xml:id='l2h-1858' class="class">date</tt></b>
	61	<dd>
	62	An idealized naive date, assuming the current Gregorian calendar
	63	always was, and always will be, in effect.
	64	Attributes: <tt class="member">year</tt>, <tt class="member">month</tt>, and <tt class="member">day</tt>.
65	</dl>
66
67	<P>
68	<dl><dt><b><span class="typelabel">class</span> <tt id='l2h-1859' xml:id='l2h-1859' class="class">time</tt></b>
69	<dd>
70	An idealized time, independent of any particular day, assuming
71	that every day has exactly 246060 seconds (there is no notion
72	of "leap seconds" here).
73	Attributes: <tt class="member">hour</tt>, <tt class="member">minute</tt>, <tt class="member">second</tt>,
74	<tt class="member">microsecond</tt>, and <tt class="member">tzinfo</tt>.
75	</dl>
76
77	<P>
78	<dl><dt><b><span class="typelabel">class</span> <tt id='l2h-1860' xml:id='l2h-1860' class="class">datetime</tt></b>
79	<dd>
80	A combination of a date and a time.
81	Attributes: <tt class="member">year</tt>, <tt class="member">month</tt>, <tt class="member">day</tt>,
82	<tt class="member">hour</tt>, <tt class="member">minute</tt>, <tt class="member">second</tt>,
83	<tt class="member">microsecond</tt>, and <tt class="member">tzinfo</tt>.
84	</dl>
85
86	<P>
87	<dl><dt><b><span class="typelabel">class</span> <tt id='l2h-1861' xml:id='l2h-1861' class="class">timedelta</tt></b>
88	<dd>
89	A duration expressing the difference between two <tt class="class">date</tt>,
90	<tt class="class">time</tt>, or <tt class="class">datetime</tt> instances to microsecond
91	resolution.
92	</dl>
93
94	<P>
95	<dl><dt><b><span class="typelabel">class</span> <tt id='l2h-1862' xml:id='l2h-1862' class="class">tzinfo</tt></b>
96	<dd>
97	An abstract base class for time zone information objects. These
98	are used by the <tt class="class">datetime</tt> and <tt class="class">time</tt> classes to
99	provide a customizable notion of time adjustment (for example, to
100	account for time zone and/or daylight saving time).
101	</dl>
102
103	<P>
104	Objects of these types are immutable.
105
106	<P>
107	Objects of the <tt class="class">date</tt> type are always naive.
108
109	<P>
110	An object <var>d</var> of type <tt class="class">time</tt> or <tt class="class">datetime</tt> may be
111	naive or aware. <var>d</var> is aware if <code><var>d</var>.tzinfo</code> is not
112	<code>None</code> and <code><var>d</var>.tzinfo.utcoffset(<var>d</var>)</code> does not return
113	<code>None</code>. If <code><var>d</var>.tzinfo</code> is <code>None</code>, or if
114	<code><var>d</var>.tzinfo</code> is not <code>None</code> but
115	<code><var>d</var>.tzinfo.utcoffset(<var>d</var>)</code> returns <code>None</code>, <var>d</var>
116	is naive.
117
118	<P>
119	The distinction between naive and aware doesn't apply to
120	<tt class="class">timedelta</tt> objects.
121
122	<P>
123	Subclass relationships:
124
125	<P>
126	<div class="verbatim"><pre>
127	object
128	timedelta
129	tzinfo
130	time
131	date
132	datetime
133	</pre></div>
134
135	<P>
136
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