pass in arbitrary options/arguments as raw text?

[AlJohri]

I want to write a task such as invoke run bash -c echo "hello" where the task run is defined as follows in bash:

docker run -it myapp "$@"

How do I do the equivalent of "$@" in pyinvoke?

[dlh]

I think you have 2 options:

1. Manually parse the arbritray args yourself, using a -- seperator.
2. Add an option to the task.

@task
def example1(c):
    rest_args = sys.argv[sys.argv.index("--") + 1 :] if "--" in sys.argv else []
    print("rest_args = {}".format(rest_args))
    # use shlex.join() if you're on Python 3.8
    c.run(
        "docker run -it myapp {}".format(" ".join([shlex.quote(x) for x in rest_args]))
    )


@task
def example2(c, docker_args=""):
    print("docker_args = {!r}".format(docker_args))
    c.run("docker run -it myapp {}".format(docker_args))

$ inv --dry --echo example1 -- a b "c with spaces"
rest_args = ['a', 'b', 'c with spaces']
docker run -it myapp a b 'c with spaces'

$ inv --dry --echo example2 --docker-args 'a b "c with spaces"'
docker_args = 'a b "c with spaces"'
docker run -it myapp a b "c with spaces"

The parser appears to support accessing the remainder args, however I'm unsure how to access that property.