import tables

class Test(tables.IsDescription):
    word1 = tables.StringCol(50, pos=0)
    word2 = tables.StringCol(50, pos=1)
    weight = tables.Int32Col(pos=2)

h5file = tables.openFile('derp.h5', mode='w')
table = h5file.createTable(h5file.root, 'derp_table', Test, 'derp')

r = table.row
words = [("hello", "salut"), ("numa", "yay"), ("full", "open")]
for w in words:
    r['word1'] = w[0]
    r['word2'] = w[1]
    r['weight'] = 0
    r.append()
table.flush()

results_query1 = [r.nrow for r in table.where('word1 == "hello"')]
print table.readCoordinates(results_query1)