Traceback (most recent call last):
  File "c:\buildslave\windows7-64-py2_7-coverage\twisted\build\py27-alldeps-withcov-windows\lib\site-packages\twisted\python\test\test_url.py", line 486, in test_parseEqualSignInParamValue
    self.assertEqual(u.asText(), 'http://localhost/?=x%3Dx%3Dx')
  File "c:\buildslave\windows7-64-py2_7-coverage\twisted\build\py27-alldeps-withcov-windows\lib\site-packages\twisted\trial\_synctest.py", line 432, in assertEqual
    super(_Assertions, self).assertEqual(first, second, msg)
  File "c:\python27\Lib\unittest\case.py", line 513, in assertEqual
    assertion_func(first, second, msg=msg)
  File "c:\python27\Lib\unittest\case.py", line 924, in assertMultiLineEqual
    self.fail(self._formatMessage(msg, standardMsg))
twisted.trial.unittest.FailTest: u'http://localhost/?=x=x=x' != u'http://localhost/?=x%3Dx%3Dx'
- http://localhost/?=x=x=x
?                     ^ ^
+ http://localhost/?=x%3Dx%3Dx
?                     ^^^ ^^^

$ hyper18/bin/python url.py
http://localhost?=x=x=x -> http://localhost/?=x%3Dx%3Dx
$ hyper19/bin/python url.py
http://localhost?=x=x=x -> http://localhost/?=x=x=x
$ cat url.py
from hyperlink import URL

text = u'http://localhost?=x=x=x'
print(u'{} -> {}'.format(text, URL.fromText(text).asText()))