numpy is not installed with Python2.

[Robert Kern]

On 8/27/10 1:38 PM, justin wrote:
> On Aug 27, 12:10 pm, Robert Kern<robert.k... at gmail.com>  wrote:
>> On 8/27/10 11:40 AM, justin wrote:
>>
>>
>>
>>
>>
>>> My university has a cluster computer, on which I want to run my python
>>> program that uses numpy.
>>> I am installing my Python2.7 locally separated from the main system,
>>> and trying to install numpy, attach it with Python2.7.
>>> I used many different versions of numpys to make it happen, but I got
>>> stuck with the same following error on every trial,
>>
>>> "[hp6 at login1 numpy]$ python2.7 setup.py install
>>> Running from numpy source directory.Traceback (most recent call last):
>>>     File "setup.py", line 210, in<module>
>>>       setup_package()
>>>     File "setup.py", line 187, in setup_package
>>>       from numpy.distutils.core import setup
>>>     File "/users/hp6/DOWN/numpy/numpy/distutils/core.py", line 25, in
>>> <module>
>>>       from numpy.distutils.command import config, config_compiler, \
>>>     File "/users/hp6/DOWN/numpy/numpy/distutils/command/build_ext.py",
>>> line 9, in<module>
>>>       from distutils.command.build_ext import build_ext as old_build_ext
>>>     File "/users/hp6/apps/python27/lib/python2.7/distutils/command/
>>> build_ext.py", line 13, in<module>
>>>       from site import USER_BASE, USER_SITE
>>> ImportError: cannot import name USER_BASE"
>>
>>> It seems the error is related to the inability of Python2.7 to process
>>> "from site import USER_BASE, USER_SITE",
>>> since the machine I succeeded to install numpy with Python2.7 doesn't
>>> prompt an error from this command,
>>> whereas this machine in which I failed to do so cannot handle this.
>>
>> Your Python installation appears to be broken. Find the site.py module that you
>> are actually importing. I.e. from the numpy source directory:
>>
>>     $ python2.7 -c "import site; print site.__file__"
>>
>> This will tell you the site.pyc file that actually gets imported. Find the
>> associated site.py file (it should be in the same directory) and check to see if
>> it has USER_BASE defined. The filename should be
>>
>>     /users/hp6/apps/python27/lib/python2.7/site.pyc
>>
>> If it isn't, that may be the source of your problem.
>>
>> --
>> Robert Kern
>>
>> "I have come to believe that the whole world is an enigma, a harmless enigma
>>    that is made terrible by our own mad attempt to interpret it as though it had
>>    an underlying truth."
>>     -- Umberto Eco
>
> Dear Kern,
>
> Thanks a lot.
> Your quick and detailed comment saves me a lot of time and effort
> now.
>
> It seems the file path links are out of order as you diagnosed.
> Like you said, there is a site.py on /users/hp6/apps/python27/lib/
> python2.7/.
> But when I typed in "$ python2.7 -c "import site; print
> site.__file__", it refers to another place:
> "/opt/apps/gurobi/3.0.0/linux64/lib/python2.5/site.pyc", and it
> doesn't have USER_BASE!
>
> So I changed the value of PYTHONPATH accordingly.

You should not set PYTHONPATH to those directories ever. The correct one will 
already be on the sys.path. In a multiple-Python environment, you simply 
shouldn't use PYTHONPATH at all since all of the interpreters will try to use it.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco