Creating a virtual environment with Python 3.x and PEP 405

Throughout this book, we will be working with different packages and libraries to create RESTful Web Services, and therefore it is convenient to work with Python virtual environments. Python 3.3 introduced lightweight virtual environments and they were improved in Python 3.4. We will work with these virtual environments, and therefore you will need Python 3.4 or greater. You can read more information about PEP 405 Python Virtual Environment, that introduced the venv module, here: https://www.python.org/dev/peps/pep-0405. All the examples in this book were tested on Python 3.6.2 on Linux, macOS, and Windows.

Note

In case you decide to use the popular virtualenv (https://pypi.python.org/pypi/virtualenv) third-party virtual environment builder or the virtual environment options provided by your Python IDE, you just have to make sure that you activate your virtual environment with the appropriate mechanism whenever it is necessary to do...