我正在尝试安装virtualevnwrapper，但是我失败了。
它抛出了这个错误：
bash: /usr/local/bin/virtualenvwrapper.sh: No such file or directory
我尝试过这样：
$ pip install virtualenvwrapper
...
$ export WORKON_HOME=~/Envs
$ mkdir -p $WORKON_HOME
然后我运行$ source /usr/local/bin/virtualenvwrapper.sh并抛出此错误
bash: /usr/local/bin/virtualenvwrapper.sh: No such file or directory
当我在上述命令中失败时，然后尝试使用$ source ~/.local/bin/virtualenvwrapper.sh并抛出此错误：
/usr/bin/python: 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.
我做了很多尝试但都失败了。在这种情况下，有人可以帮助我吗？
**My OS Is Ubuntu 18+**