NameError: global name 'loader' is not defined

Hal_Huntley · September 5, 2007, 7:02pm

I'm a sys admin trying to install the matplotlib python package for someone
on our staff. I'm not overly familar with python.

We are trying to use matplotlib with pylab.

uname -a
Linux andromeda 2.6.13-1.1532_FC4smp #1 SMP Thu Oct 20 01:51:51 EDT 2005
i686 i686 i386 GNU/Linux

The python version we have is the default that we got with the Fedora Core 4
package.

python -V
Python 2.4.1

I've installed using /usr/bin/easy_install:
matplotlib-0.90.1-py2.4-win32.egg numpy-1.0.3.1-py2.4-win32.egg

If we get in to python and give the command:

from pylab import *

We get:

···

==
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/pylab.py", line 1, in ?
    from matplotlib.pylab import *
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/pylab.py", line 201, in ?
    import mlab #so I can override hist, psd, etc...
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/mlab.py", line 64, in ?
    import nxutils
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/nxutils.py", line 17, in ?
    from matplotlib._ns_nxutils import *
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/_ns_nxutils.py", line 7, in ?
    __bootstrap__()
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/_ns_nxutils.py", line 5, in __bootstrap__
    del __bootstrap__, __loader__
NameError: global name '__loader__' is not defined

==

I've read that numeric may need to be installed, so I got "Numeric-24.2"
and did:
python setup.py build
python setup.py install

That didn't help solve the issue.

Is there some other package that needs to be installed? I checked the FAQ
and this issue does not seem to be there.

Regards,

Hal Huntley
SRI International

Eric_Firing1 · September 5, 2007, 7:49pm

Hal Huntley wrote:

I'm a sys admin trying to install the matplotlib python package for someone
on our staff. I'm not overly familar with python.

We are trying to use matplotlib with pylab.

uname -a
Linux andromeda 2.6.13-1.1532_FC4smp #1 SMP Thu Oct 20 01:51:51 EDT 2005
i686 i686 i386 GNU/Linux

The python version we have is the default that we got with the Fedora Core 4
package.

python -V
Python 2.4.1

I've installed using /usr/bin/easy_install:
matplotlib-0.90.1-py2.4-win32.egg numpy-1.0.3.1-py2.4-win32.egg

I've never understood eggs and easy_install, but it certainly doesn't look right that you are installing things labelled "win32" on a Linux box! I'm surprised you got that far.

For linux, I like to install from source, since the distro packages for numpy and mpl are usually too old. If you get the tarballs, build and install numpy first, then mpl. You don't need or want Numeric or numarray. The build process may fail. If it does, it is because you need to install distro packages with headers for various libraries, and you should be able to see from the failures which headers are missing.

Maybe someone else can provide more detailed instructions for Fedora C4.

Eric

···

If we get in to python and give the command:

from pylab import *

We get:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/pylab.py", line 1, in ?
    from matplotlib.pylab import *
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/pylab.py", line 201, in ?
    import mlab #so I can override hist, psd, etc...
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/mlab.py", line 64, in ?
    import nxutils
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/nxutils.py", line 17, in ?
    from matplotlib._ns_nxutils import *
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/_ns_nxutils.py", line 7, in ?
    __bootstrap__()
  File
  "/usr/lib/python2.4/site-packages/matplotlib-0.90.1-py2.4-win32.egg/matplotlib/_ns_nxutils.py", line 5, in __bootstrap__
    del __bootstrap__, __loader__
NameError: global name '__loader__' is not defined

I've read that numeric may need to be installed, so I got "Numeric-24.2"
and did:
    python setup.py build
    python setup.py install

That didn't help solve the issue.

Is there some other package that needs to be installed? I checked the FAQ
and this issue does not seem to be there.

Regards,

Hal Huntley
SRI International

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