kennethreitz/dive-into-python3
1
0
Fork 0
mirror of https://github.com/kennethreitz/dive-into-python3.git synced 2026-06-05 23:10:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

added note about __lt__, __eq__, and __le__

Browse Source
This commit is contained in:
Mark Pilgrim
2009-07-23 10:00:13 -04:00
parent 1f0411293c
commit 0a6373ac6b
1 changed files with 4 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
special-method-names.html
+4
View File
@@ -670,6 +670,10 @@ class FieldStorage:
<td><a href=http://www.python.org/doc/3.0/reference/datamodel.html#object.__bool__><code>x.<dfn>__bool__</dfn>()</code></a>
</table>
<blockquote class=note>
<p><span class=u>&#x261E;</span>If you define a <code>__lt__()</code> method but no <code>__gt__()</code> method, Python will use the <code>__lt__()</code> method with operands swapped. However, Python will not combine methods. For example, if you define a <code>__lt__()</code> method and a <code>__eq()__</code> method and try to test whether <code>x &lt;= y</code>, Python will not call <code>__lt__()</code> and <code>__eq()__</code> in sequence. It will only call the <code>__le__()</code> method.
</blockquote>
<h2 id=pickle>Classes That Can Be Serialized</h2>
<!--see http://docs.python.org/3.0/library/pickle.html:-->