We need a working Python interpreter with pytest, but for some sections in this chapter, we will also have to install other libraries and frameworks. As usual, all of them can be installed with pip:
$ pip install pytest
For the Testing HTTP section, we are going to need the requests library and the requests-mock testing library:
$ pip install requests requests-mock
For the Testing WSGI with WebTest section, we are going to need webtest:
$ pip install webtest
And for the paragraphs regarding testing web frameworks, we are going to need the targeted web frameworks installed, even though you aren't going to use all of them concurrently in a real project:
$ pip install flask django pyramid turbogears2
The examples have been written on Python 3.7, pytest 6.0.2, Requests 2.24.0, Requests-Mock 1.8.0, WebTest 2.0.35, Django 3.1.4, Flask 1.1.2, Pyramid 1.10.5, and TurboGears 2.4.3, but should work on most modern Python versions. You can find the code files present in...
