[Numpy-discussion] Problem with importing numpy in Ubuntu

[Sebastian Haase]

You should be allowed to remove anything in /usr/local without fear to
kill your operation system.
In case you miss python2.5 afterwards, you should be able to just
install it with apt-get install python2.5 at any time - it would go to
/usr/lib + /usr/bin + ...  NOT /usr/local.

It is unlikely that you ever installed python by hand into anything
else than /usr/local -- so there should be not lasting conflict.

Before deleting anything you could also check your environment variables:
PYTHONPATH should not exist.
PYTHONHOME neither
PATH should not contain /usr/local

Then, "which python" should not point to /usr/local anymore and you
should be all fine (still having "garbage" in /usr.local)

-S.




On Tue, Jul 27, 2010 at 6:29 PM, Robert Faryabi
<robert.faryabi at gmail.com> wrote:
> I just looked at my system more carefully.
>
> There are two executable files
>
> /usr/local/bin/python
>
> and
>
> /usr/bin/python
> this is a link to python2.6
>
> I believe that the first one is source compiled version. So, how can I get
> rid of it?
>
> On Tue, Jul 27, 2010 at 12:09 PM, Robert Faryabi <robert.faryabi at gmail.com>
> wrote:
>>
>> it returns
>>
>> /usr/local/bin/python
>>
>> On Tue, Jul 27, 2010 at 12:07 PM, Matthieu Brucher
>> <matthieu.brucher at gmail.com> wrote:
>>>
>>> What does "which python" return?
>>>
>>> 2010/7/27 Robert Faryabi <robert.faryabi at gmail.com>:
>>> > I'm getting the same
>>> >
>>> >>>> sys.maxunicode
>>> > 65535
>>> >
>>> > I might have some "hand complied" python. Once I compiled Biopython
>>> > long
>>> > ago.
>>> >
>>> > The problem is I do not know how to clean up all the python version
>>> > that I
>>> > have. I tried the reinstall option. It does not work. I cannot remove
>>> > the
>>> > python. It will wipe out my operating system.
>>> >
>>> > Any suggestion?
>>> >
>>> >
>>> >
>>> >
>>> > On Tue, Jul 27, 2010 at 10:42 AM, Sebastian Haase <seb.haase at gmail.com>
>>> > wrote:
>>> >>
>>> >> The origin of this problem is the fact that Python supports (at least)
>>> >> 2 types of Unicode:
>>> >> 2 bytes and/or 4 bytes per character.
>>> >>
>>> >> Additionally, for some incomprehensible reason the Python source code
>>> >> (as downloaded from python.org) defaults to 2ByteUnicode whereas
>>> >> all (major) Linux distributions default to 4ByteUnicode.....
>>> >>
>>> >> ( check >>> sys.maxunicode   to see what you have; I get  1114111, i.e
>>> >> >65535 , so I have 4 byte (on Debian) )
>>> >>
>>> >> So, most likely you have some "hand compiled" Python somewhere ....
>>> >>
>>> >> - Sebastian Haase
>>> >>
>>> >>
>>> >>
>>> >> On Tue, Jul 27, 2010 at 4:33 PM, Matthieu Brucher
>>> >> <matthieu.brucher at gmail.com> wrote:
>>> >> > It's a problem of compilation of Python and numpy with different
>>> >> > parameters. But I've tried the same yesterday, and the Ubuntu
>>> >> > repository are OK in that respect, so there is something not quite
>>> >> > right with your configuration.
>>> >> >
>>> >> > Matthieu
>>> >> >
>>> >> > 2010/7/27 Robert Faryabi <robert.faryabi at gmail.com>:
>>> >> >> I can see the numpy now, but I have the problem with a shared
>>> >> >> library.
>>> >> >> Here is the error
>>> >> >>
>>> >> >>>>> import numpy
>>> >> >> Traceback (most recent call last):
>>> >> >>   File "<stdin>", line 1, in <module>
>>> >> >>   File "/usr/lib/python2.6/dist-packages/numpy/__init__.py", line
>>> >> >> 130,
>>> >> >> in
>>> >> >> <module>
>>> >> >>     import add_newdocs
>>> >> >>   File "/usr/lib/python2.6/dist-packages/numpy/add_newdocs.py",
>>> >> >> line 9,
>>> >> >> in
>>> >> >> <module>
>>> >> >>     from lib import add_newdoc
>>> >> >>   File "/usr/lib/python2.6/dist-packages/numpy/lib/__init__.py",
>>> >> >> line
>>> >> >> 4, in
>>> >> >> <module>
>>> >> >>     from type_check import *
>>> >> >>   File "/usr/lib/python2.6/dist-packages/numpy/lib/type_check.py",
>>> >> >> line
>>> >> >> 8,
>>> >> >> in <module>
>>> >> >>     import numpy.core.numeric as _nx
>>> >> >>   File "/usr/lib/python2.6/dist-packages/numpy/core/__init__.py",
>>> >> >> line
>>> >> >> 5, in
>>> >> >> <module>
>>> >> >>     import multiarray
>>> >> >> ImportError:
>>> >> >> /usr/lib/python2.6/dist-packages/numpy/core/multiarray.so:
>>> >> >> undefined symbol: _PyUnicodeUCS4_IsWhitespace
>>> >> >>
>>> >> >>
>>> >> >> Do you have any idea? It seems that the UCS4 and UCS2 are related
>>> >> >> to 16
>>> >> >> and
>>> >> >> 8 bit unicode.
>>> >> >>
>>> >> >>
>>> >> >> On Tue, Jul 27, 2010 at 10:16 AM, Charles R Harris
>>> >> >> <charlesr.harris at gmail.com> wrote:
>>> >> >>>
>>> >> >>>
>>> >> >>> On Tue, Jul 27, 2010 at 7:46 AM, Robert Faryabi
>>> >> >>> <robert.faryabi at gmail.com>
>>> >> >>> wrote:
>>> >> >>>>
>>> >> >>>> I am new to numpy. Hopefully this is a correct forum to post my
>>> >> >>>> question.
>>> >> >>>>
>>> >> >>>> I have Ubuntu Luci system. I installed Python 2.6.5 and Python
>>> >> >>>> 3.0 as
>>> >> >>>> well as python-numpy using Ubuntu repository.
>>> >> >>>> When I import the numpy into python, I get the following error.
>>> >> >>>>
>>> >> >>>> >> import numpy
>>> >> >>>> Traceback (most recent call last):
>>> >> >>>>   File "<stdin>", line 1, in <module>
>>> >> >>>> ImportError: No module named numpy
>>> >> >>>>
>>> >> >>>> The package cannot be located.
>>> >> >>>>
>>> >> >>>> Then I tried to point the interpreter to the numpy
>>> >> >>>>
>>> >> >>>> >>> sys.path.append('/usr/lib/
>>> >> >>>> python2.6/dist-packages')
>>> >> >>>>
>>> >> >>>
>>> >> >>> I use an install.pth file
>>> >> >>>
>>> >> >>> $charris at ubuntu ~$ cat
>>> >> >>> ~/.local/lib/python2.6/site-packages/install.pth
>>> >> >>> /usr/local/lib/python2.6/dist-packages
>>> >> >>>
>>> >> >>> You will need to create the .local directory and its
>>> >> >>> subdirectories.
>>> >> >>> Don't
>>> >> >>> use Python 3.0, use 3.1 or greater if you want to experiment.
>>> >> >>>
>>> >> >>> <snip>
>>> >> >>>
>>> >> >>> Chuck
>>> >> >>>
>>> >> >>>
>>> >> >>> _______________________________________________
>>> >> >>> NumPy-Discussion mailing list
>>> >> >>> NumPy-Discussion at scipy.org
>>> >> >>> http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>> >> >>>
>>> >> >>
>>> >> >>
>>> >> >> _______________________________________________
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>>> >> >> http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>> >> >>
>>> >> >>
>>> >> >
>>> >> >
>>> >> >
>>> >> > --
>>> >> > Information System Engineer, Ph.D.
>>> >> > Blog: http://matt.eifelle.com
>>> >> > LinkedIn: http://www.linkedin.com/in/matthieubrucher
>>> >> > _______________________________________________
>>> >> > NumPy-Discussion mailing list
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>>> >> > http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>> >> >
>>> >> _______________________________________________
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>>> >
>>> >
>>> > _______________________________________________
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>>> > http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>> >
>>> >
>>>
>>>
>>>
>>> --
>>> Information System Engineer, Ph.D.
>>> Blog: http://matt.eifelle.com
>>> LinkedIn: http://www.linkedin.com/in/matthieubrucher
>>> _______________________________________________
>>> NumPy-Discussion mailing list
>>> NumPy-Discussion at scipy.org
>>> http://mail.scipy.org/mailman/listinfo/numpy-discussion
>>
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