ANSI colours for prompt title

[ewels]

Hi there,

Is it possible to give colours and formatting using ANSI codes to a questionary prompt title?

I am using the following code to generate prompts:

questionary.Choice(title=nice_title, value=raw_value)

I show the default value and other helpful information in the nice_title which is not passed through to the underlying response. This works brilliantly - I'd just like to be able to add some formatting to this.

Manual ANSI codes

I've tried manually adding ANSI codes to the string, or using libraries like rich but they are escaped and don't work:

myval  ^[[1;3;31m(False)^[[0m

Where I would like:

myval  (False)

..with (False) in bold-red text in this example.

Prompt toolkit

I dug around in the Questionary codebase a little and found that the title attribute is of class FormattedText, which is defined here:

questionary/questionary/prompts/common.py

Lines 23 to 30 in 11ceb8e

	# This is a cut-down version of `prompt_toolkit.formatted_text.AnyFormattedText`
	# which does not exist in v2 of prompt_toolkit
	FormattedText = Union[
	str,
	List[Tuple[str, str]],
	List[Tuple[str, str, Callable[[Any], None]]],
	None,
	]

I feel like this is maybe getting close to something I could use, but I pretty much hit a wall at that point. I tried a bit of trial and error with passing lists of strings with stuff like class:selected but succeeded only in breaking stuff. Also I want to format only a partial section of the string so I'm not sure that this would work.

Any tips or pointers on how I might be able to achieve this?

Many thanks in advance,

Phil

[kiancross]

Hi Phil,

You're very close with FormattedText. I think this should do what you want:

import questionary

style = questionary.Style([
                     #fg:red <- These two are equivalent
    ("choice-title", "fg:#f00 bold"),
])

questionary.select("Choose something", [
    questionary.Choice(
        title=[("", "myval "), ("class:choice-title", "(false)")],
        value="myval",
    )
], style=style).ask()

[ewels]

Ah fantastic - thank you so much! I've been fighting on and off with this for a while now, your little example brings it all together!

Implemented and working great in no time once I had that pattern. Thank you!