Example as interactive and option based. about click

[mumumumu]

I was looking into similar functionality today, from the wiki it looks like you need to catch the SystemExit exception. (http://click.pocoo.org/api/?highlight=systemexit#click.BaseCommand.main)

I think you might want to try something like:

while True:
    try:
        # your command
    except SystemExit as e:
        if e.code:
            break

The reason for the e.code conditional is so you can still terminate the program with Ctrl-C

[contactr2m]

Is there any example of achieving this ? I currently use cmd/cmd2 for interactive shell but it does not handle arguments with spaces etc.. making commands arguments available through click would be better option.

has anyone implemented it before ? or any guidance would be appreciated.
Thank you

[vimalloc]

+1

[vimalloc]

I've been putting some work into this. I'm sure it will need more work (I'll try and update this if I make changes), but here is an example of how it might be done (with handling options).

import click
import cmd
import sys

from click import BaseCommand, UsageError


class REPL(cmd.Cmd):
    def __init__(self, ctx):
        cmd.Cmd.__init__(self)
        self.ctx = ctx

    def default(self, line):
        subcommand = line.split()[0]
        args = line.split()[1:]

        subcommand = cli.commands.get(subcommand)
        if subcommand:
            try:
                subcommand.parse_args(self.ctx, args)
                self.ctx.forward(subcommand)
            except UsageError as e:
                print(e.format_message())
        else:
            return cmd.Cmd.default(self, line)


@click.group(invoke_without_command=True)
@click.pass_context
def cli(ctx):
    if ctx.invoked_subcommand is None:
        repl = REPL(ctx)
        repl.cmdloop()


@cli.command()
@click.option('--foo', required=True)
def a(foo):
    print("a")
    print(foo)


@cli.command()
@click.option('--foo', required=True)
def b(foo):
    print("b")
    print(foo)

if __name__ == "__main__":
    cli()

[dawranliou]

Not sure when this is added but you can now use User Input Prompts