pytest-crayons

A pytest plugin for colorful print statements.

Installation

pip install pytest-crayons

Usage

Include a color fixture in the param list of a test.
Then use it instead of print.

def test_magenta(magenta):
    magenta("this should be magenta")

Just like normal print statements, you only see the output if:

There's an failure in the test.
or you pass in -s or --capture=no
or you wrap the statement in a with capsys.disabled(): block.

For our examples, we'll use -s:

output of test_something

Available colors

red
green
yellow
blue
magenta
cyan

Example with all colors:

def test_colors(red, green, yellow, blue, magenta, cyan):
    print("") # for the newline
    red("this should be red")
    green("this should be green")
    yellow("this should be yellow")
    blue("this should be blue")
    magenta("this should be magenta")
    cyan("this should be cyan")

output of test_colors

This was included in a talk for PyCascades 2023

Conference talk page : Sharing is Caring - Sharing pytest Fixtures

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