Demo program for pytables bug

test.py

import tables
import numpy as np

h5 = tables.openFile('test.h5', 'w')

table = h5.createTable(
    h5.root, 'table',
    description=np.dtype([('col', 'S16')]))

table.append([('S_%05d' % i,) for i in xrange(10)])

print " ------- Unindexed ---------"
for xx in range(11):
    table.where('col < "S_%05d"' % xx)
    print (xx,
           len(list(table.where('col < "S_%05d"' % xx))),
           len(list(table.where('col == "S_%05d"' % xx))),
           len(list(table.where('col <= "S_%05d"' % xx))))

table.cols.col.createCSIndex()

print " -------- Indexed --------"
print " This should look the same as above"
for xx in range(11):
    table.where('col < "S_%05d"' % xx)
    print (xx,
           len(list(table.where('col < "S_%05d"' % xx))),
           len(list(table.where('col == "S_%05d"' % xx))),
           len(list(table.where('col <= "S_%05d"' % xx))))