Learning Flask Framework

Installing Python packages

Now that you have ensured that Python is installed correctly, we will install some popular Python packages that will be used over the course of this book.

We will be installing these packages system-wide but, once they are installed, we will be working exclusively in virtual environments.

Installing pip

The de-facto Python package installer is pip . We will use it throughout the book to install Flask and other third-party libraries.

If you already have setuptools installed, you can install pip by simply running the following command:

$ sudo easy_install pip

After completing the installation, verify that pip is installed correctly:

$ pip --version
pip 1.2.1 from /usr/lib/python2.7/site-packages/pip-1.2.1-py2.7.egg (python ...