Trying to import namedtuple results in import error leading to downstream problems.

[Emlyn Clay]

1. Open python.
$ python

2. Issue the command
import collections.namedtuple

3. Results in

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "collections.py", line 20, in <module>
    import numpy as np
  File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/usr/local/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 4, in <module>
    from type_check import *
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/usr/local/lib/python2.7/dist-packages/numpy/core/__init__.py", line 40, in <module>
    from numpy.testing import Tester
  File "/usr/local/lib/python2.7/dist-packages/numpy/testing/__init__.py", line 8, in <module>
    from unittest import TestCase
  File "/usr/lib/python2.7/unittest/__init__.py", line 58, in <module>
    from .result import TestResult
  File "/usr/lib/python2.7/unittest/result.py", line 9, in <module>
    from . import util
  File "/usr/lib/python2.7/unittest/util.py", line 2, in <module>
    from collections import namedtuple, OrderedDict
ImportError: cannot import name namedtuple
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 64, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 1, in <module>
    from apport.report import Report
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 12, in <module>
    import subprocess, tempfile, os.path, urllib, re, pwd, grp, os
  File "/usr/lib/python2.7/urllib.py", line 32, in <module>
    from urlparse import urljoin as basejoin
  File "/usr/lib/python2.7/urlparse.py", line 111, in <module>
    from collections import namedtuple
  File "collections.py", line 20, in <module>
    import numpy as np
  File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/usr/local/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 4, in <module>
    from type_check import *
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/usr/local/lib/python2.7/dist-packages/numpy/core/__init__.py", line 30, in <module>
    __all__ += numeric.__all__
NameError: name 'numeric' is not defined

Original exception was:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "collections.py", line 20, in <module>
    import numpy as np
  File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/usr/local/lib/python2.7/dist-packages/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/__init__.py", line 4, in <module>
    from type_check import *
  File "/usr/local/lib/python2.7/dist-packages/numpy/lib/type_check.py", line 8, in <module>
    import numpy.core.numeric as _nx
  File "/usr/local/lib/python2.7/dist-packages/numpy/core/__init__.py", line 40, in <module>
    from numpy.testing import Tester
  File "/usr/local/lib/python2.7/dist-packages/numpy/testing/__init__.py", line 8, in <module>
    from unittest import TestCase
  File "/usr/lib/python2.7/unittest/__init__.py", line 58, in <module>
    from .result import TestResult
  File "/usr/lib/python2.7/unittest/result.py", line 9, in <module>
    from . import util
  File "/usr/lib/python2.7/unittest/util.py", line 2, in <module>
    from collections import namedtuple, OrderedDict
ImportError: cannot import name namedtuple

Other python package information:

2.7.3-0ubuntu2 (/var/lib/apt/lists/gb.archive.ubuntu.com_ubuntu_dists_precise_main_binary-amd64_Packages) (/var/lib/dpkg/status)
 Description Language:
                 File: /var/lib/apt/lists/gb.archive.ubuntu.com_ubuntu_dists_precise_main_binary-amd64_Packages
                  MD5: d1ea97f755d8153fe116080f2352859b

+ numpy - 1.6.1 - active development (/usr/local/lib/python2.7/dist-packages)

+ Numeric should be deprecated and isn't listed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: python 2.7.3-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Wed May 9 11:36:12 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: python-defaults
UpgradeStatus: No upgrade log present (probably fresh install)

[Emlyn Clay (emlyn-seahermit)]

Please ignore the line 'InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)' information - I used a multi-boot USB and this is an artefact from that.

[Julian Taylor (jtaylor)]

namedtuple is no package, you import it like this:
import collections
collections.namedtuple("a", "b")

the traceback is a local issue:
 File "collections.py", line 20, in <module>
     import numpy as np
   File "/usr/local/lib/python2.7/dist-packages/numpy/__init__.py", line 137, in <module>

you have a collections.py in your working dir that gets imported instead of the system collections
that file then again imports a local numpy, not the system one
please be careful when filing bugs on this system, make sure its not a local installation interfering with the packaged ones