没有名为virtualenvwrapper的模块？

Question

I'm trying to install openCV on my new Mac (Mojave).So, I'm following this tutorial .

I want to create a new virtual whit this command:

mkvirtualenv cv3 -p python3

But sometimes I get the following output on my terminal:

Running virtualenv with interpreter /usr/local/bin/python3
Using base prefix '/usr/local/Cellar/python/3.7.2_1/Frameworks/Python.framework/Versions/3.7'
New python executable in /Users/keyone/code/.virtualenvs/cv3/bin/python3.7
Not overwriting existing python script /Users/keyone/code/.virtualenvs/cv3/bin/python (you must use /Users/keyone/code/.virtualenvs/cv3/bin/python3.7)
Installing setuptools, pip, wheel...
done.
/usr/bin/python: No module named virtualenvwrapper

or this output:

-bash: mkvirtualenv: command not found

This is how my .bash_profile file looks like:

# Setting PATH for Python 3.7
# The original version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.7/bin:${PATH}"
export PATH
export PATH=/usr/local/bin:$PATH
export WORKON_HOME=$HOME/code/.virtualenvs
export PROJECT_HOME=$HOME/code
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python
export VIRTUALENVWRAPPER_VIRTUALENV=/usr/local/bin/virtualenv
export VIRTUALENVWRAPPER_VIRTUALENV_ARGS='--no-site-packages'

I looked on stack overflow to find a solution, but nothing is working for me. virtualen, python etc. are already installed.

Answer 1

尝试使用virtualenv -p python3 envname因为它在virtualenv -p python3 envname中对我virtualenv -p python3 envname ：D