Jon Olav Vik <jonovik <at> gmail.com> writes: > I'm particularly puzzled by the following (can be run after the code below). > Note that t[0] is a Table object. > > In [74]: for row in t[0]: print row > ....: > (0, 100.0) > (3, 103.0) > (6, 106.0) > (9, 109.0) > > In [75]: [row for row in t[0]] > Out[75]: [(9, 109.0), (9, 109.0), (9, 109.0), (9, 109.0)] > In [77]: a, b, c, d = [row for row in t[0]] > > In [78]: a is b > Out[78]: True > > In [79]: b is c > Out[79]: True > > I thought that a list comprehension and explicit for loop were mostly > equivalent. However, it seems that the Row class is a slippery creature...
One more try: fails to sort, but at least includes all rows. In [41]: [row for row in heapq.merge(*[ti.read() for ti in t])] Out[41]: [(0, 100.0), (3, 103.0), (1, 101.0), (2, 102.0), (6, 106.0), (4, 104.0), (5, 105.0), (9, 109.0), (7, 107.0), (8, 108.0)] I suspect I'm missing something. Jon Olav ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
