Hi Danid, hi Francesc, Il 31/03/2012 03:08, Francesc Alted ha scritto: > On 3/30/12 7:57 PM, Daπid wrote: >> Hello, >> >> I have several different kinds of data tables, absolutely independent, >> defined as in the tutorial >> (http://pytables.github.com/usersguide/tutorials.html): >>
[CUT] >> >> One, naively, saw the repetition and would want to do something like: >> >> class Pie(IsDescription): # All kind of pies >> dough=Int64Col() >> baking=Float64Col() >> >> >> class SaltedPie(Pie): >> anchovy=Float32Col() >> >> class SweetPie(Pie): >> apple=UInt32Col() >> >> >> but, when I try to set 'dough', I get: >> >> KeyError: 'no such column: dough' >> >> >> Of course, my approach is not correct. Is there a valid way of doing it? > > Right, subclassing IsDescription is not supported. Sorry, but I think > that the only way is to do the repetition explicitly. Or, maybe you can > use a NumPy dtype instead, that allows you to create table schemas more > succinctly. > Some work on in broken inheritance of IsDescriptor has been done in the development branch (see [#65]). Thanks to Andrea Bedini for the patch. Which version of PyTables are you using David? cheers [#65] https://github.com/PyTables/PyTables/issues/65 -- Antonio Valentino ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
