How to use the flit.init.TEMPLATE.format function in flit

else:
            metadata[name] = value

    if 'scripts' in cp:
        scripts = OrderedDict(cp['scripts'])
    else:
        scripts = {}

    entrypoints = CaseSensitiveConfigParser()
    if ep_file.is_file():
        with ep_file.open(encoding='utf-8') as f:
            entrypoints.read_file(f)

    written_entrypoints = False
    with Path('pyproject.toml').open('w', encoding='utf-8') as f:
        f.write(TEMPLATE.format(metadata=pytoml.dumps(metadata)))

        if scripts:
            f.write('\n[tool.flit.scripts]\n')
            pytoml.dump(scripts, f)

        for groupname, group in entrypoints.items():
            if not dict(group):
                continue

            if '.' in groupname:
                groupname = '"{}"'.format(groupname)
            f.write('\n[tool.flit.entrypoints.{}]\n'.format(groupname))
            pytoml.dump(OrderedDict(group), f)
            written_entrypoints = True

    print("Written 'pyproject.toml'")