potential replacement for initializer()

initialize.py

from templates import EMPTY_FOLDER

def create(output_root, template_path, content, out=sys.stdout):
    # content may be EMPTY_FOLDER, which means just make the directories
    path_components = template_path.split("/")
    parents = path_components[:-1]
    if parents:
        output_dir = os.path.join(output_root, *parents)
        if not os.path.exists(output_dir):
            os.makedirs(output_dir)
            print >>out, '* %s directory created' % ("/".join(parents))
    if content is not EMPTY_FOLDER:
        output_filename = os.path.join(output_root, *path_components)
        f = open(output_filename, "w")
        f.write(content)
        f.close()
        print >>out, '* %s written' % (template_path)

def initializer(env_root, args, template_name, out=sys.stdout, err=sys.stderr):
    path = os.getcwd()
    addon = os.path.basename(path)
    # if more than one argument
    if len(args) > 1:
        print >>err, 'Too many arguments.'
        return 1
    # avoid clobbering existing files, but we tolerate things like .git
    existing = [fn for fn in os.listdir(path) if not fn.startswith(".")]
    if existing:
        print >>err, 'This command must be run in an empty directory.'
        return 1

    template = addon_templates[template_name]
    target_cfg = find_target_cfg(path, require_id=True, err=err)

    package_json_obj = template["get_package_json_obj"](addon)
    package_json = json.dumps(package_json_obj, indent=4)+"\n"
    create(path, "package.json", package_json, out)

    for file_path, content in template["content"].items():
        assert file_path != "package.json"
        if isinstance(content, callable):
            content = content(target_cfg, env_root)
        elif isinstance(content, str):
            content = content % {'name': addon}
        else:
            assert content is EMPTY_FOLDER
        create(path, file_path, content, out)

    print >>out, '\nYour sample add-on is now ready.'
    print >>out, 'Do "cfx test" to test it and "cfx run" to try it.  Have fun!'
    return 0