Installing virtualenv virtualenvwrapper with pip on osx 10.11.1

Question

Objective

Install virtualenv virtualenvwrapper

Background

I am trying to create a sample flask app by following this tutorial https://realpython.com

Answer 1

You shouldn't be using your system's version of Python.

According to Python's docs:

The version of Python that ships with OS X is great for learning but it’s not good for development.

According to Apple's docs:

Developers using Perl, Python, Ruby, or any other scripting languages that ship with OS X, are encouraged to manage their own installations of the language and dependencies ...

So, I recommend installing Python 2 and/or Python 3 using homebrew as suggested and described in Python's OS X installation docs.

Note that these instructions provide the command to install Python 2. To install Python 3, you would run:

brew install python3    # instead of 'brew install python'

These Python installation docs also link to detailed instructions for installing virtualenv and virtualenvwrapper.

Update:

It looks like you have virtualenvwrapper installed, but not properly configured. When I installed it, I ran the following code based on installation docs for virtualenvwrapper to configure:

# Create a directory to hold the virtual environments.
mkdir $HOME/.virtualenvs

echo "
# Python's virtualenvwrapper-RELATED
export WORKON_HOME=$HOME/.virtualenvs
source /usr/local/bin/virtualenvwrapper.sh 
" >> ~/.bash_profile
source ~/.bash_profile