在以下shell中,如果未设置LD_LIBRARY_PATH,则错误显示LD_LIBRARY_PATH:未绑定变量.
我可以使用像$ {xxx:-yyy}这样的类似用法来简化它.
#!/bin/bash
set -o nounset
export LD_LIBRARY_PATH=/mypath:$LD_LIBRARY_PATH
Run Code Online (Sandbox Code Playgroud) 当我使用Enthought Python发行版随附的IPython时,可以很好地导入pyvision包。但是,当我尝试在PyCharm 1.2.1中导入pyvision时,出现以下错误
File "C:\Python27\lib\site-packages\pyvision\__init__.py", line 146, in <module>
from pyvision.types.img import Image,OpenCVToNumpy,NumpyToOpenCV
File "C:\Python27\lib\site-packages\pyvision\types\img.py", line 43, in <module>
import numpy
File "C:\Python27\lib\site-packages\numpy\__init__.py", line 142, in <module>
import add_newdocs
File "C:\Python27\lib\site-packages\numpy\add_newdocs.py", line 9, in <module>
from numpy.lib import add_newdoc
File "C:\Python27\lib\site-packages\numpy\lib\__init__.py", line 13, in <module>
from polynomial import *
File "C:\Python27\lib\site-packages\numpy\lib\polynomial.py", line 17, in <module>
from numpy.linalg import eigvals, lstsq
File "C:\Python27\lib\site-packages\numpy\linalg\__init__.py", line 48, in <module>
from linalg import *
File "C:\Python27\lib\site-packages\numpy\linalg\linalg.py", line 23, in <module>
from numpy.linalg import lapack_lite …Run Code Online (Sandbox Code Playgroud)