[Pytables-users] Problem with pytables-1.2 and Row._fillCol on win32

[Ashley W. <ash...@gm...>]

Hi,

While testing pytables-1.2-pre1 (also tested 20051005 snapshot) on  
win32 with some older HDF5 files I encountered a problem with  
retrieving a single column from the table.

Using:

     values = table.cols._f_col('somecolumn')

returned the *next* column after 'somecolumn'.  I tracked the problem  
down to the Row._fillCol method in TableExtension.pyx, and the  
problem was fixed by the patch at the end.

It looks like something is messing up the _fields dictionary on the  
NestedRecArray -- I didn't delve any deeper trying to find out *why*  
this correction works.

I was using:

Pytables-1.2-pre1
numarray-1.3.3
Numeric-23.8
HDF5-1.6.4
Python-2.3.5


This problem did not occur on MacOSX.

The fix:

TableExtension.pyx
984,989c984,990
<     if field:
<       # If field is not None, select it
<       fields = self.rbufRA._fields[field]
<     else:
<       # if don't, select all fields
<       fields = self.rbufRA
---
 >     #if field:
 >     #  # If field is not None, select it
 >     #  fields = self.rbufRA._fields[field]
 >     #else:
 >     #  # if don't, select all fields
 >     #  fields = self.rbufRA
 >     fields = self.rbufRA
1006c1007,1010
<       result[startr:stopr] = fields[istartb:istopb:istep]
---
 >       if field:
 >         result[startr:stopr] = fields.field(field) 
[istartb:istopb:istep]
 >       else:
 >         result[startr:stopr] = fields[istartb:istopb:istep]


Cheers,
Ashley

PS. UCL is working on OSX:

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
=-=-=-=
PyTables version:  1.2-pre1-1
HDF5 version:      1.6.4
numarray version:  1.3.3
Zlib version:      1.2.2
LZO version:       1.08 (Jul 12 2002)
UCL version:       1.03 (Jul 20 2004)
BZIP2 version:     1.0.2 (30-Dec-2001)
Python version:    2.3.5 (#1, Mar 20 2005, 20:38:20)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1809)]
Platform:          darwin-Power Macintosh
Byte-ordering:     big
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
=-=-=-=
Performing the complete test suite!
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- 
=-=-=-=
Numeric (version 23.3) is present. Adding the Numeric test suite.
test01_readTable (test_backcompat.Table1_0UCL) ... ok
test01_readTable (test_backcompat.Table2_0UCL) ... ok
test01_readTable (test_backcompat.Table2_1UCL) ... ok
... more ok's
test03_setitemCArray (test_carray.UCLShuffleTestCase) ... ok
test01_readVLArray (test_vlarray.UCLComprTestCase) ... ok
test02_appendVLArray (test_vlarray.UCLComprTestCase) ... ok