Question

我已经使用cygwin安装程序安装了numpy，它显示为已成功安装。但我无法在我的程序中导入它。

Traceback (most recent call last):
File "pythonpath.py", line 1, in <module>
import numpy
File "/usr/lib/python2.7/site-packages/numpy/__init__.py", line 170, 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 18, in <module>
from .polynomial import *
File "/usr/lib/python2.7/site-packages/numpy/lib/polynomial.py", line 19, in <module>
from numpy.linalg import eigvals, lstsq, inv
File "/usr/lib/python2.7/site-packages/numpy/linalg/__init__.py", line 51, in <module>
from .linalg import *
File "/usr/lib/python2.7/site-packages/numpy/linalg/linalg.py", line 29, in <module>
from numpy.linalg import lapack_lite, _umath_linalg
ImportError: No such file or directory

我查了一下，发现lapack_lite.dll

下的_umath_linalg.dll和/lib/python2.7/site-packages/numpy/linalg都可用

当我尝试重新安装numpy时，我收到以下消息：

$ pip install numpy
Requirement already satisfied: numpy in /usr/lib/python2.7/site-packages

该套餐也是最新的。

 $ pip install numpy --upgrade
 Requirement already up-to-date: numpy in /usr/lib/python2.7/site-packages

如何在我的程序中导入numpy？

Answer 1

我只是重新启动了系统，错误就消失了！

Answer 2

我现在在 Python 3.8 中遇到了同样的情况。不幸的是，重新启动并没有帮助。但我找到了解决方案：

# cygcheck /usr/lib/python3.8/site-packages/numpy/linalg/lapack_lite.cpython-38-x86_64-cygwin.dll

--> cygcheck: track_down: 找不到 cyglapack-0.dll

解决方案：

# cp /usr/lib/lapack/cyglapack-0.dll /bin

之后在/bin中找到cyglapack-0.dll，因为它在PATH中。

无法在cygwin中导入numpy

2 个答案: