Function create_release_branch

scripts/prepare_release.py:262–290

Create a release branch from the updated base branch. Args: version: Release version without the leading `v`. base_branch: Base branch to release from. remote: Remote name used for fetching and fast-forward pulls. Returns: Created release branch name. R

(version: str, base_branch: str, remote: str)

def create_release_branch(version: str, base_branch: str, remote: str) -> str:
    """Create a release branch from the updated base branch.

    Args:
        version: Release version without the leading `v`.
        base_branch: Base branch to release from.
        remote: Remote name used for fetching and fast-forward pulls.

    Returns:
        Created release branch name.

    Raises:
        ReleaseError: The branch already exists or Git cannot create it.
    """
    branch = f"release/{version}"
    git(["checkout", base_branch])
    git(["pull", "--ff-only", remote, base_branch])
    git(["fetch", "--tags", remote])

    local_branch = git(["branch", "--list", branch], capture_output=True)
    if local_branch:
        raise ReleaseError(f"Local branch already exists: {branch}")

    remote_branch = git(["ls-remote", "--heads", remote, branch], capture_output=True)
    if remote_branch:
        raise ReleaseError(f"Remote branch already exists: {remote}/{branch}")

    git(["switch", "-c", branch])
    return branch


def run_validation(args: argparse.Namespace) -> None: