def download_kernels()

in src/kernels/cli.py [0:0]

• 30 lines of code
• 6 McCabe index (conditional complexity)

def download_kernels(args):
    lock_path = args.project_dir / "kernels.lock"

    if not lock_path.exists():
        print(f"No kernels.lock file found in: {args.project_dir}", file=sys.stderr)
        sys.exit(1)

    with open(args.project_dir / "kernels.lock", "r") as f:
        lock_json = json.load(f)

    all_successful = True

    for kernel_lock_json in lock_json:
        kernel_lock = KernelLock.from_json(kernel_lock_json)
        print(
            f"Downloading `{kernel_lock.repo_id}` at with SHA: {kernel_lock.sha}",
            file=sys.stderr,
        )
        if args.all_variants:
            install_kernel_all_variants(
                kernel_lock.repo_id, kernel_lock.sha, variant_locks=kernel_lock.variants
            )
        else:
            try:
                install_kernel(
                    kernel_lock.repo_id,
                    kernel_lock.sha,
                    variant_locks=kernel_lock.variants,
                )
            except FileNotFoundError as e:
                print(e, file=sys.stderr)
                all_successful = False

    if not all_successful:
        sys.exit(1)