发现给的安装文档中多了一行：
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
按照文档执行后（多运行了上面一行后），就出现了以下这段代码，如何破？

[root@iZbp1f7g9nyfs5flzyvpf7Z bin]# source ~/.bashrc
/usr/bin/python3: 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/python3 and that PATH is
set properly.