打开命令行界面总会提示：

ubuntu16安装python3后，打开命令行界面总会提示：
/usr/bin/python: Error while finding module specification for 'virtualenvwrapper.hook_loader' (ModuleNotFoundError: No module named 'virtualenvwrapper')
virtualenvwrapper.sh: There was a problem running the initialization hooks.

If Python could not import the module virtualenvwrapper.hook_loader,
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/bin/python and that PATH is
set properly.

修改命令：

1、
sudo pip3 install virtualenv virtualenvwrapper
2、
source .bashrc

然后就没有提示了