我正在尝试在这里安装 scikits.nufft 包， 我下载了 zip 文件，解压缩并 cd 到目录。它包含一个 setup.py 文件，所以我运行
python setup.py install
但它给了我以下与我的 PYTHONPATH 相关的错误
sudo python setup.py install
sudo: unable to resolve host Lenovo
/usr/local/lib/python2.7/dist-packages/distribute-0.6.31-py2.7.egg/setuptools/command/install_scripts.py:3: UserWarning: Module dap was already imported from None, but /usr/lib/python2.7/dist-packages is being added to sys.path
from pkg_resources import Distribution, PathMetadata, ensure_directory
running install
Checking .pth file support in /usr/local/lib/python2.7/site-packages/
/usr/bin/python -E -c pass
TEST FAILED: /usr/local/lib/python2.7/site-packages/ does NOT support .pth files
error: bad install directory or PYTHONPATH
You are attempting to install a package to a directory that is not
on PYTHONPATH and which Python does not read ".pth" files from. The
installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:
/usr/local/lib/python2.7/site-packages/
and your PYTHONPATH environment variable currently contains:
''
Here are some of your options for correcting the problem:
* You can choose a different installation directory, i.e., one that is
on PYTHONPATH or supports .pth files
* You can add the installation directory to the PYTHONPATH environment
variable. (It must then also be on PYTHONPATH whenever you run
Python and want to use the package(s) you are installing.)
* You can set up the installation directory to support ".pth" files by
using one of the approaches described here:
http://packages.python.org/distribute/easy_install.html#custom-installation-locations
Please make the appropriate changes for your system and try again.
似乎认为路径是空的，但是当我检查路径时，我得到了，
echo $PYTHONPATH
/usr/local/lib/python2.7/site-packages:/home/david/PYTHON
有谁知道为什么它可能认为路径是空的？或者对这里可能出现的问题有任何其他想法。谢谢，戴夫