def test_netrc_present(self):
		for ie in gen_extractors():
			if not hasattr(ie, '_login'):
				continue
			self.assertTrue(
				hasattr(ie, '_NETRC_MACHINE'),
				'Extractor %s supports login, but is missing a _NETRC_MACHINE property' % ie.IE_NAME)

 def test_no_duplicates(self):
     ies = gen_extractors()
     for tc in gettestcases():
         url = tc['url']
         for ie in ies:
             if type(ie).__name__ in ('GenericIE', tc['name'] + 'IE'):
                 self.assertTrue(ie.suitable(url), '%s should match URL %r' % (type(ie).__name__, url))
             else:
                 self.assertFalse(ie.suitable(url), '%s should not match URL %r' % (type(ie).__name__, url))

 def test_no_duplicates(self):
     ies = gen_extractors()
     for tc in get_testcases():
         url = tc["url"]
         for ie in ies:
             if type(ie).__name__ in ("GenericIE", tc["name"] + "IE"):
                 self.assertTrue(ie.suitable(url), "%s should match URL %r" % (type(ie).__name__, url))
             else:
                 self.assertFalse(ie.suitable(url), "%s should not match URL %r" % (type(ie).__name__, url))

 def test_keywords(self):
     ies = gen_extractors()
     matching_ies = lambda url: [ie.IE_NAME for ie in ies
                                 if ie.suitable(url) and ie.IE_NAME != 'generic']
     self.assertEqual(matching_ies(':ytsubs'), ['youtube:subscriptions'])
     self.assertEqual(matching_ies(':ytsubscriptions'), ['youtube:subscriptions'])
     self.assertEqual(matching_ies(':thedailyshow'), ['ComedyCentral'])
     self.assertEqual(matching_ies(':tds'), ['ComedyCentral'])
     self.assertEqual(matching_ies(':colbertreport'), ['ComedyCentral'])
     self.assertEqual(matching_ies(':cr'), ['ComedyCentral'])

def supported_sites(request):
    """
    Returns the list of support sites.
    """
    sites = [x.IE_NAME for x in extractor.gen_extractors()]
    sites.sort()
    data = {
        "sites": sites,
    }
    return render(request, 'videodl/supported_sites.html', data)

def generateBlacklist(regexs):
    """
    Generate a blacklist of extractors based on IE_NAME.
    regexs is a list or tuple of regular expressions.
    Extractors that match any of the regular expressions are added.
    """
    import re
    from youtube_dl.extractor import gen_extractors
    for ie in gen_extractors():
        for r in regexs:
            if re.search(r, ie.IE_NAME):
                YoutubeDLWrapper._BLACKLIST.append(ie.IE_NAME)

 def setUp(self):
     self.ies = gen_extractors()

def default_extractors():
    for ie in gen_extractors():
        key = ie.ie_key()
        if not(key == "Generic" or key.endswith("Channel") or key.endswith("Playlist") or key.endswith("User")) and "crunchyroll" not in key.lower():
            yield ie