strategies.py 文件源码

def dns_labels():
    """
    Strategy for generating limited charset DNS labels.
    """
    # This is too limited, but whatever
    return (
        s.text(
            u'abcdefghijklmnopqrstuvwxyz0123456789-',
            min_size=1, max_size=25)
        .filter(
            lambda s: not any([
                s.startswith(u'-'),
                s.endswith(u'-'),
                s.isdigit(),
                s[2:4] == u'--',
            ])))