python：无法使用安装在站点软件包外部的软件包

Question

我有python 2.7.5并且我安装了一些软件包

python setup.py install --user

所以这个安装包在

/users/me/.local/lib/python2.7/site-packages

然后我将PYTHONPATH变量更新为

/users/me/.local/lib/python2.7/site-packages,/users/me/.local/lib/python2.7/site-packages

但是现在如果我尝试去做

virtualenv

这是我安装的软件包，我得到了

bash: virtualenv: command not found

我如何使用已在站点软件包之外安装的virtualenv软件包？

编辑

这是我的sys.path

'', '/users/me/.local/lib/python2.7/site-packages/virtualenv-15.1.0.dev0-py2.7.egg', '/usr/lib/python2.7/site-packages/pip-7.1.2-py2.7.egg', '/usr/lib/python2.7/site-packages/supervisor-3.2.0-py2.7.egg', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/users/me/.local/lib/python2.7/site-packages', '/usr/lib64/python2.7/site-packages', '/usr/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages', '/users/me/.local/lib/python2.7/site-packages'

但我仍然收到命令未找到错误

还有，这是我的$ PATH

/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/users/me/.local/lib/python2.7/site-packages:/users/me/.local/lib/python2.7/site-packages

Answer 1

您可以在PYTHONPATH环境变量中将路径的值附加到新库中。

如何在Windows 7中添加到pythonpath中？

但是您也可以在运行时附加路径。

import sys
sys.path.append('/dir1/dir2/libs')