# HG changeset patch
# User Atul Varma <varmaa@toolness.com>
# Date 1212704698 25200
# Node ID 758a15a83be88c7ab53ef69b9c925c21785e6a5a
# Parent  ae28bd3be137318be3733ea4110bdf00896c22f5
More stuff.

diff -r ae28bd3be137 -r 758a15a83be8 PythonForJsProgrammers.txt
--- a/PythonForJsProgrammers.txt	Thu Jun 05 15:19:42 2008 -0700
+++ b/PythonForJsProgrammers.txt	Thu Jun 05 15:24:58 2008 -0700
@@ -145,6 +145,21 @@
     ...
     SyntaxError: invalid syntax
 
+Nothingness
+===========
+
+Unlike JavaScript, Python doesn't have a concept of ``undefined``.
+Instead, things that would normally cause ``undefined`` to be returned
+by JavaScript simply end up raising an exception in Python:
+
+    >>> "a string".foo
+    Traceback (most recent call last):
+    ...
+    AttributeError: 'str' object has no attribute 'foo'
+
+Python does have an analog to JavaScript's ``null``: it's called
+``None``.
+
 Functions
 =========