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您不应使用sudo在virtualenv内安装软件包.

对我来说,它似乎是文件许可问题. pip或virtualnev都安装了root特权ant,这就是当您尝试在virtualenv中安装新软件包时需要sudo的原因.

检查文件权限以获取您正在使用的可执行文件(virtualenv,pip).

dm@Z580:~$which virtualenv

/usr/local/bin/virtualenv

dm@Z580:~$ls -l /usr/local/bin/virtualenv

-rwxr-xr-x 1 root root 214 aug 18 21:20 /usr/local/bin/virtualenv

dm@Z580:~$which pip

/usr/local/bin/pip

dm@Z580:~$ls -l /usr/local/bin/pip

-rwxr-xr-x 1 root root 207 jun 3 15:33 /usr/local/bin/pip

dm@Z580:~$virtualenv -p python2.7 testenv

Running virtualenv with interpreter /usr/bin/python2.7

New python executable in testenv/bin/python2.7

Also creating executable in testenv/bin/python

Installing setuptools, pip, wheel...done.

dm@Z580:~$source testenv/bin/activate

(testenv)dm@Z580:~$which pip

/home/dm/testenv/bin/pip

(testenv)dm@Z580:~$ls -l /home/dm/testenv/bin/pip

-rwxrwxr-x 1 dm dm 219 sep 21 17:29 /home/dm/testenv/bin/pip