# -*- coding: utf-8 -*-


from tornado import version_info

if version_info[0] >= 4:
    from http2.torando4 import *
else:
    raise NotImplementedError()

# -*- coding: utf-8 -*-

try:
    from tornado import version_info
except ImportError:
    pass
else:
    if version_info[0] >= 4:
        from http2.torando4 import *


allow absent of tornado