cannot see ansi colors in the stdout capture call

i had run pytest with --color=yes in terminal and some of my tests where printing something on stdout, pytest captured the output, but ansi colors where not present.

here was the full command: pytest -vv -x -rP --color=yes --durations=0

does pytest have ansi color output support from stdout call capture ?

here im testing a function that prints colored output in my terminal

but not in pytest captured stdout call

or maybe im using the wrong flag …

[asottile]

even if this were possible to change within pytest it would be a big breaking change to consumers of pytest if the default isatty were to change (for which the current assumption is isatty=False)

usually it’s best to individually test the coloring via mocking isatty or whatever trigger your coloring code uses – for example from all-repos or from pre-commit

[asottile]

it wouldn’t work for all methods of color detection – only for those which use isatty (for instance some do color detection via curses or via tput)