我使用以下命令创建了virtualenv.
mkvirtualenv --distribute --system-site-packages "$1"
在启动virtualenv之后workon,我输入ipython.它提示我
WARNING: Attempting to work in a virtualenv. If you encounter problems, please install IPython inside the virtualenv.
当我尝试使用virtualenv安装ipython时,我收到以下错误消息:
pip install ipython
Requirement already satisfied (use --upgrade to upgrade): ipython in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
Cleaning up...
有谁知道如何在virtualenv内安装？