Running the examples in the csv module docs (http://docs.python.org/library/csv.html) causes problems reading file on a mac.  This is highlighted in issue 1072404 (http://bugs.python.org/issue1072404).

Commentary on the bug indicates a no fix, meaning most/many people using a mac will get an error if they use the sample code in the docs.

A simpler solution would be to use universal newline mode in the doc examples.  This is actually mentioned in commentary on the bug, and appears to work.

Proposal
--------
In all example code blocks, use mode 'rU' when opening the file.  1st code block, for example, would become:

spamReader = csv.reader(open('eggs.csv', 'rU'), delimiter=' ', quotechar='|')

That should solve the problem on mac without impacting compatibility on other operating systems.  Note: Haven't been able to verify this on other platforms.