Writing Pulumi Outputs to files in Python

__main__.py

import pulumi
import yaml

config = pulumi.Config()

password: pulumi.Output[str] = config.require_secret("password")
other_value: str | None = config.get("other_value")


# Writing inside the apply lambda function
pulumi.Output.all(password=password, other_value=other_value).apply(
    func=lambda args: yaml.dump(
        data={
            "password": args["password"],
            "other_value": args["other_value"],
        },
        stream=open("bar.yaml", mode="w"),
    )
)


## Using a "callback" function
def write_template(tpl: dict) -> None:
    yaml.dump(data=tpl, stream=open("foo.yaml", mode="w"))


pulumi.Output.all(password=password, other_value=other_value).apply(
    func=lambda args: write_template(
        tpl={
            "password": args["password"],
            "other_value": args["other_value"],
        }
    )
)