tkFileDialog question

Matt Mitchell mmitchell at
Mon Nov 16 19:30:02 CET 2009

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-----Original Message-----
From: at
[ at] On
Behalf Of r
Sent: Monday, November 16, 2009 12:16 AM
To: python-list at
Subject: Re: tkFileDialog question


There is also a nice thing you need to know about Python if you
already do not know. That is the fact that all empty collections bool
to False. This makes Truth testing easier.

>>> bool([])
>>> bool('')
>>> bool({})
>>> bool([1])
>>> bool([[]])
>>> bool(' ')

any empty collection, string, or 0 always bools to False.

Thank you both for all the help.  Your suggestions have helped clean up
a bunch of my code.


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