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- from __future__ import absolute_import, division, print_function
- from tornado.ioloop import IOLoop
- from tornado.netutil import ThreadedResolver
- # When this module is imported, it runs getaddrinfo on a thread. Since
- # the hostname is unicode, getaddrinfo attempts to import encodings.idna
- # but blocks on the import lock. Verify that ThreadedResolver avoids
- # this deadlock.
- resolver = ThreadedResolver()
- IOLoop.current().run_sync(lambda: resolver.resolve(u'localhost', 80))
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