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): > > > from tables import * > > class SaltedPie(IsDescription): > dough=Int64Col() > baking=Float64Col() > anchovy=Float32Col() > > class SweetPie(IsDesctiption): > dough=Int64Col() > baking=Float64Col() > apple=UInt32Col() > > > 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. -- Francesc Alted ------------------------------------------------------------------------------ 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
