Question

我在Cygwin尝试import numpy。我收到以下错误消息。

我有numpy 1.11.2-1，a.k.a。python2-numpy: Python scientific computing module包，通过Cygwin安装程序安装。我也有Python 2.7.14-1，a.k.a。python2: Python 2 language interpreter包也是通过Cygwin安装的。我的机器上没有本地安装的Python。

$ python
Python 2.7.14 (default, Oct 31 2017, 21:12:13)
[GCC 6.4.0] on cygwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/numpy/__init__.py", line 142, in <module>
    from . import add_newdocs
  File "/usr/lib/python2.7/site-packages/numpy/add_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "/usr/lib/python2.7/site-packages/numpy/lib/__init__.py", line 8, in <module>
    from .type_check import *
  File "/usr/lib/python2.7/site-packages/numpy/lib/type_check.py", line 11, in <module>
    import numpy.core.numeric as _nx
  File "/usr/lib/python2.7/site-packages/numpy/core/__init__.py", line 14, in <module>
    from . import multiarray
ImportError: No such file or directory

cygcheck：

$ cygcheck -c python2-numpy
Cygwin Package Information
Package              Version        Status
python2-numpy        1.11.2-1       OK

此外，我能够在import numpy的另一台计算机上Cygwin。

似乎有很多帖子，但都缺乏适合我的解决方案。我尝试按Not able to import numpy in cygwin重新启动计算机，但这不起作用。

我还编辑了我的$PATH变量：

$ echo $PATH
/usr/lib/python2.7/site-packages/numpy/:/usr/lib/python2.7/site-packages/:/usr/bin

解决方案：

$ PATH=/usr/lib/lapack:$PATH

Answer 1

Numpy无法加载BLAS库，可能是因为PATH被重新定义为不包含/usr/lib/lapack，或者您没有使用bash或csh。

$ cygcheck -l liblapack0
/etc/profile.d/lapack0.csh
/etc/profile.d/lapack0.sh
/usr/lib/lapack/cygblas-0.dll
/usr/lib/lapack/cyglapack-0.dll

为避免冲突，NETLIB BLAS共享库位于/usr/lib/lapack下并且/etc/profile.d/中的脚本将该目录添加到PATH

$ cat /etc/profile.d/lapack0.sh
LA_PREFIX=/usr
LA_LIBDIR=${LA_PREFIX}/lib
LA_BINDIR=${LA_LIBDIR}/lapack

# Check if the PATH variable is empty or not


if test -n "${PATH}"; then
  # PATH is not empty

  # Check if path is already in PATH
  if ! /bin/echo ${PATH} | /bin/grep -q "${LA_BINDIR}" ; then
    # Path is not already in PATH, append it to PATH
    export PATH="${PATH}:${LA_BINDIR}"
  fi
else
  # PATH is empty
  export PATH="${LA_BINDIR}"
fi

unset LA_PREFIX
unset LA_LIBDIR
unset LA_BINDIR

Cygwin：导入numpy错误

1 个答案: