Can I serialize args for calling a subprocess?

[FredrikNoren]

I.e. I have a program that I use BaseSettings for, and I'd like to invoke it in a "type safe" way; is that something that is possible right now?

For example:

class MyProgram(BaseSettings):
  hi: str

args: MyProgram
subprocess.run("my_program.py", args.serialize()) # I'd like to do something like this

[hramezani]

You can use the CLI feature of pydantic-settings and define your model like:

from pydantic_settings import BaseSettings


class MyProgram(BaseSettings, cli_parse_args=True):
  hi: str

print(MyProgram())

and then call it by:

subprocess.run(["python", "<your-script>", "--hi", "test"])

You can find more infor in the docs

[FredrikNoren]

@hramezani Yeah but that's only for parsing the args right? I'm looking for a way to serialize them again, so that I can start my sub-program in a type-safe way

[hramezani]

@kschwab do you have any idea here?

[kschwab]

@hramezani @FredrikNoren it is probably straightforward to add it under the CliApp class as CliApp.serialize(object), something like that. I'll take a peek here soon, but it's a nice idea.

[kschwab]

@hramezani @FredrikNoren #643 is ready for review.

[FredrikNoren]

@kschwab Awesome! Great work :D I'll test in the next release