Sorting Two-Column List in Report Mode

I have three panels on a notebook page, and each panel has a two-column
list in report mode. The first (left) column contains string labels, and the
second (right) will contain a float value between 0.00-1.00 for each label
(when it's calculated). I want to display each list in descending order of
the second (right) column. Using wxPython-2.6.x.

   The wPIA book's chapter on lists informs me that I can use SetItemData()
only if those numbers are integers or longs. There's also reference to a
'mixin' class about which I currently know nothing, but will learn if it
will allow me to sort floats in descending order. I'm not finding anything
on the mixin class in the 2.6 or 2.8 docs on the web site.

   I'd appreciate a pointer to what I should read to learn how to sort the
lists as we need them to be sorted. Examples and detailed instructions would
not be overkill.

Rich

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Richard B. Shepard, Ph.D. | The Environmental Permitting
Applied Ecosystem Services, Inc.(TM) | Accelerator
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