pytest Quick Start Guide

pytest-annotate

Pyannotate (https://github.com/dropbox/pyannotate) is a project that observes runtime type information and can use that information to insert type annotations into the source code, and pytest-annotate makes it easy to use with pytest.

Let's get back to this simple test case:

def highest_rated(series):    return sorted(series, key=itemgetter(2))[-1][0]def test_highest_rated():    series = [        ("The Office", 2005, 8.8),        ("Scrubs", 2001, 8.4),        ("IT Crowd", 2006, 8.5),        ("Parks and Recreation", 2009, 8.6),        ("Seinfeld", 1989, 8.9),    ]    assert highest_rated(series) == "Seinfeld"

After installing pytest-annotate, we can generate an annotations file passing the --annotations-output flag:

λ pytest --annotate-output=annotations.json

This will ...