[ase-users] namespace collision in io module with Python 2.7

[Nichols A. Romero]

This is for the gpaw_custom_hdf5 branch. Yes, the test directory has an io directory
which trunk does not have.

Nichols A. Romero, Ph.D.
Argonne Leadership Computing Facility
Argonne National Laboratory
Building 240 Room 2-127
9700 South Cass Avenue
Argonne, IL 60490
(630) 252-3441


----- Original Message -----
From: "Ask Hjorth Larsen" <askhl at fysik.dtu.dk>
To: "Nichols A. Romero" <naromero at alcf.anl.gov>
Cc: "ase-users" <ase-users at listserv.fysik.dtu.dk>
Sent: Thursday, September 1, 2011 2:39:46 PM
Subject: Re: [ase-users] namespace collision in io module with Python 2.7

Hi

On Thu, 1 Sep 2011, Nichols A. Romero wrote:

> I have Python 2.7 and the SVN version of ASE & GPAW. I think this is a namespace
> collision between the io module in ASE and the io module in Python 2.7.
>
> [naromero:~/gpaw_custom_hdf5/gpaw/test] naromero% python2.7 ./test.py
> Traceback (most recent call last):
>  File "./test.py", line 11, in <module>
>    import gpaw.mpi as mpi
>  File "/Users/naromero/gpaw_custom_hdf5/gpaw/__init__.py", line 211, in <module>
>    from gpaw.aseinterface import GPAW
>  File "/Users/naromero/gpaw_custom_hdf5/gpaw/aseinterface.py", line 9, in <module>
>    from ase.units import Bohr, Hartree
>  File "/Users/naromero/ase/ase/__init__.py", line 16, in <module>
>    from ase.io import read, write
>  File "/Users/naromero/ase/ase/io/__init__.py", line 5, in <module>
>    from zipfile import is_zipfile
>  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/zipfile.py", line 462, in <module>
>    class ZipExtFile(io.BufferedIOBase):
> AttributeError: 'module' object has no attribute 'BufferedIOBase'
>
> Is there an easy fix for this?
>
> Nichols A. Romero, Ph.D.
> Argonne Leadership Computing Facility
> Argonne National Laboratory
> Building 240 Room 2-127
> 9700 South Cass Avenue
> Argonne, IL 60490
> (630) 252-3441

Very strange.  Is there by any chance a file or directory called 'io.py' 
or 'io' in the particular version of gpaw whose test directory you run 
this from?

Regards
Ask