import yaml


with open('messages.yml') as f:
    data = yaml.safe_load(f)


def iterdict(d):
    for k, v in d.items():
        if isinstance(v, dict):
            iterdict(v)
        elif isinstance(v, str):
            with open('result.txt', 'a+') as file:
                original_text = v
                result = f'{original_text}\n\ntranslate here\n\n'
                file.write(result)
        else:
            raise ValueError('Unsupported type in yaml file')


if __name__ == '__main__':
    iterdict(data)