python - 操作系统错误 : cannot open shared object file: No such file or directory even though file is in the folder

Question

我已经和这个问题斗争了很长一段时间了。我正在尝试安装 Yaafe 以提取音频特征。我按照此处的说明进行操作:https://github.com/Yaafe/Yaafe

一切都安装得很好，但是当我尝试运行测试文件“frames.py”时，出现以下错误:

  File "frames.py", line 6, in <module>
    from yaafelib import FeaturePlan, Engine, AudioFileProcessor 
  File "/usr/local/lib/python2.7/dist-packages/yaafelib/__init__.py", line 36, in <module>
    from yaafelib.core import (loadComponentLibrary,
  File "/usr/local/lib/python2.7/dist-packages/yaafelib/core.py", line 35, in <module>
    yaafecore = cdll.LoadLibrary('libyaafe-python.so')
  File "/usr/lib/python2.7/ctypes/__init__.py", line 443, in LoadLibrary
    return self._dlltype(name)
  File "/usr/lib/python2.7/ctypes/__init__.py", line 365, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: libyaafe-python.so: cannot open shared object file: No such file or directory

我已使用以下命令将 lib 目录包含到 LD_LIBRARY_PATH:

export LD_LIBRARY_PATH=/usr/local/lib

确实，当我回显 LIBRARY_PATH 时，它就在那里。此外，当我检查/usr/local/lib 时，它包含以下内容:

libyaafe-components.so         libyaafe-io.so             python2.7
libyaafe-components.so.0       libyaafe-io.so.0           python3.4
libyaafe-components.so.0.70.0  libyaafe-io.so.0.70.0      site_ruby
libyaafe-core.so               libyaafe-python.so         yaafe
libyaafe-core.so.0             libyaafe-python.so.0
libyaafe-core.so.0.70.0        libyaafe-python.so.0.70.0

所以不应该一切都好吗？我不明白这是什么问题。我已按照说明进行操作。

Answer 1

更改您的代码，以便在异常发生之前打印 os.environ。这样你就会看到 Python 进程是否设置了正确的环境。另一个需要检查的显而易见的事情是您的 Python 进程是否具有足够的权限来打开和读取 libyaafe-python.so。请注意，出于安全原因，默认情况下 sudo 会限制调用命令的环境(例如，请参阅 here)。