pytest-crayons

A pytest plugin for colorful print statements.

Installation

pip install pytest-crayons

Usage

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

def test_magenta(magenta):
    blue("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:

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")

This was included in a talk for PyCascades 2023

• Conference talk page : Sharing is Caring - Sharing pytest Fixtures