def set_github_output()

in action.py [0:0]


def set_github_output(name: str, value: str):
    """Write multiline string to GitHub Actions output variable"""
    if GITHUB_OUTPUT:
        delim = str(uuid.uuid4())
        with open(GITHUB_OUTPUT, "a", encoding="utf-8") as f:
            f.write(f"{name}<<{delim}\n{value}\n{delim}\n")