def import_module(name, package=None):
    if name.startswith('.'):
        if not package:
            raise TypeError("relative imports require the 'package' argument")
        level = 0
        for character in name:
            if character != '.':
                break
            level += 1
        name = _resolve_name(name[level:], package, level)
    __import__(name)
    return sys.modules[name]
Return true if 'header_name' is an HTTP/1.1 "Hop-by-Hop" header
dataset/ETHPy150Open slacy/minimongo/minimongo/config.py/import_module--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/servers/basehttp.py/is_hop_by_hop