Choice - dropdown list instead of all comma separated values in one line

Hi All,

This is more a question. I’m using a choice prompt with a list of values which are quite long (each value is more than 30 characters in length).

esclation_policy = click.prompt('Please choose the escalation policy',
                                    type=click.Choice(esclation_policy_list),
                                    default='Default Team')

I would like to print each value on a separate line but by default they are printed comma separated until line wraps - which is very unreadable.

Is there any way to achieve the below ?

Please choose the escalation policy:
value1
value2
value3
...
valueN

instead of:

Please choose the escalation policy(value1, value2, value3, ..., valueN)

PS: I couldn’t find in documentation support for this.

Thanks & Regards, Constantin

[davidism]

This might become possible with #938.

[jcrotts]

You could monkey patch _build_prompt to get the behavior you want.

import os
import click
from click import Choice

def _build_prompt(text, suffix, show_default=False, default=None, show_choices=True, type=None):
    prompt = text + ":"
    if type is not None and show_choices and isinstance(type, Choice):
        prompt += "\n"
        prompt += "\n".join(map(str, type.choices))
    if default is not None and show_default:
        prompt = '%s [%s]' % (prompt, default)
    return prompt + "\n" + ">"

click.termui._build_prompt = _build_prompt

escalation_policy_list = ["value1", "value2", "value3"]

esclation_policy = click.prompt('Please choose the escalation policy',
                                type=click.Choice(escalation_policy_list))

You would also need to subclass or patch Choice to change the behavior of the invalid choice error message.

I believe this is the part you would need to override. https://github.com/pallets/click/blob/2c622eed402c64e1645db3904c2410f6c05fbf19/click/types.py#L129

Feel free to continue the discussion, however I am going to close this issue because it isn’t a bug/ isn’t related to improving Click.