Hi, In view of the upcoming release I thought I'd report this because at the time I cannot fix it myself:
I am using a structured array with a dtype specified with the following numpy-accepted format (quotation follows from http://docs.scipy.org/doc/numpy/reference/arrays.dtypes.html): [(field_name, field_dtype, field_shape), ...] obj should be a list of fields where each field is described by a tuple of length 2 or 3. (Equivalent to the descr item in the __array_interface__ attribute.) The first element, field_name, is the field name (if this is '' then a standard field name, 'f#', is assigned). The field name may also be a 2-tuple of strings where the first string is either a “title” (which may be any string or unicode string) or meta-data for the field which can be any object, and the second string is the “name” which must be a valid Python identifier. This is my concrete example: header = [(('timestamp', 't'), 'u4'), (('unit (cluster) id', 'unit'),'u2')] This is what PyTables says upon passing either the structured array or np.dtype(header) to the createTables function: > test.createTable('/', 'spike', s, 'test') --------------------------------------------------------------------------- ValueError Traceback (most recent call last) /home/tejero/Dropbox/O/ridge/doc/<ipython-input-40-5fdbd9feb41d> in <module>() ----> 1 test.createTable('/', 'spike', s, 'test') /home/tejero/Local/Envs/test/lib/python2.7/site-packages/tables/file.pyc in createTable(self, where, name, description, title, filters, expectedrows, chunkshape, byteorder, createparents) 768 description=description, title=title, 769 filters=filters, expectedrows=expectedrows, --> 770 chunkshape=chunkshape, byteorder=byteorder) 771 772 /home/tejero/Local/Envs/test/lib/python2.7/site-packages/tables/table.pyc in __init__(self, parentNode, name, description, title, filters, expectedrows, chunkshape, byteorder, _log) 805 self._v_recarray = nparray 806 self.description, self._rabyteorder = \ --> 807 descr_from_dtype(nparray.dtype) 808 809 # No description yet? /home/tejero/Local/Envs/test/lib/python2.7/site-packages/tables/description.pyc in descr_from_dtype(dtype_) 723 fields = {} 724 fbyteorder = '|' --> 725 for (name, (dtype, pos)) in dtype_.fields.items(): 726 kind = dtype.base.kind 727 byteorder = dtype.base.byteorder ValueError: too many values to unpack -á. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
