I have now something like that:
view['listmodel'].set_sort_column_id(5,gtk.SORT_DESCENDING)
view['listmodel'].set_sort_func(5,compare_data, 5)
view['listmodel'].set_sort_func(0,compare_data, 0)
...
def compare_data(model, iter1, iter2, column):
data1 = model.get_value(iter1,column)
data2 = model.get_value(iter2,column)
print data1, data2, cmp(data1, data2)
return cmp(data1, data2)
but it sorts only by column 5. tried also
view['listmodel'].set_sort_func(5,compare_data, 0)
but it doesn't work...
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