Step 6: Once you have mysql and homebrew installed, you will need to confirm that you have pip (a python based package manager) on your computer. To do so, type

pip

at the terminal. If you get a “command not found” error, follow the instructions here to get pip installed.

Step 7: Install virtualenv for python (a python virtual environment). It is recommended that you read the blog post here, if you haven’t worked with virtual environments in python before.

sudo pip install virtualenv

Navigate to a directory of your choosing, and remember the path of that directory. You will be using this as your working folder for assignments in this class.

Now, initialize virtualenv in this directory:

virtualenv env

Step 8: Using git, which you previously installed, obtain the requirements.txt file from the class repository. I will not be providing instructions for this step, because learning to use git (even if you’re learning it on the fly right now) is definitely essential for data scientists and engineers. If you’re sneaky about it and you don’t want to clone the class repository for some reason, you can use wget or curl to obtain the file.

The file requirements.txt is located in the DS-LA-03/src/lesson01 folder.

Here is a link to the class github repository:

https://github.com/ga-students/DS-LA-03/

Step 9: In preparation for installing a python virtual environment.

If you have OSX Mavericks and are using the virtual env, please run:

Because the numpy installer is broken for the latest version of OSX (something to do with XCode 5.1). 

sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future env/bin/pip install --upgrade numpy

numpy has been removed from the requirements.txt file.

Install numpy generically, systemwide:

sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future pip install --upgrade numpy