[exfm] Modernize

youtube_dl/extractor/exfm.py

@@ -1,56 +1,58 @@
+from __future__ import unicode_literals
+
 import re
-import json
 
 from .common import InfoExtractor
 
 
 class ExfmIE(InfoExtractor):
-    IE_NAME = u'exfm'
-    IE_DESC = u'ex.fm'
-    _VALID_URL = r'(?:http://)?(?:www\.)?ex\.fm/song/([^/]+)'
-    _SOUNDCLOUD_URL = r'(?:http://)?(?:www\.)?api\.soundcloud\.com/tracks/([^/]+)/stream'
+    IE_NAME = 'exfm'
+    IE_DESC = 'ex.fm'
+    _VALID_URL = r'http://(?:www\.)?ex\.fm/song/(?P<id>[^/]+)'
+    _SOUNDCLOUD_URL = r'http://(?:www\.)?api\.soundcloud\.com/tracks/([^/]+)/stream'
     _TESTS = [
         {
-            u'url': u'http://ex.fm/song/eh359',
-            u'file': u'44216187.mp3',
-            u'md5': u'e45513df5631e6d760970b14cc0c11e7',
-            u'info_dict': {
-                u"title": u"Test House \"Love Is Not Enough\" (Extended Mix) DeadJournalist Exclusive",
-                u"uploader": u"deadjournalist",
-                u'upload_date': u'20120424',
-                u'description': u'Test House \"Love Is Not Enough\" (Extended Mix) DeadJournalist Exclusive',
+            'url': 'http://ex.fm/song/eh359',
+            'md5': 'e45513df5631e6d760970b14cc0c11e7',
+            'info_dict': {
+                'id': '44216187',
+                'ext': 'mp3',
+                'title': 'Test House "Love Is Not Enough" (Extended Mix) DeadJournalist Exclusive',
+                'uploader': 'deadjournalist',
+                'upload_date': '20120424',
+                'description': 'Test House \"Love Is Not Enough\" (Extended Mix) DeadJournalist Exclusive',
             },
-            u'note': u'Soundcloud song',
-            u'skip': u'The site is down too often',
+            'note': 'Soundcloud song',
+            'skip': 'The site is down too often',
         },
         {
-            u'url': u'http://ex.fm/song/wddt8',
-            u'file': u'wddt8.mp3',
-            u'md5': u'966bd70741ac5b8570d8e45bfaed3643',
-            u'info_dict': {
-                u'title': u'Safe and Sound',
-                u'uploader': u'Capital Cities',
+            'url': 'http://ex.fm/song/wddt8',
+            'md5': '966bd70741ac5b8570d8e45bfaed3643',
+            'info_dict': {
+                'id': 'wddt8',
+                'ext': 'mp3',
+                'title': 'Safe and Sound',
+                'uploader': 'Capital Cities',
             },
-            u'skip': u'The site is down too often',
+            'skip': 'The site is down too often',
         },
     ]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
-        song_id = mobj.group(1)
-        info_url = "http://ex.fm/api/v3/song/%s" %(song_id)
-        webpage = self._download_webpage(info_url, song_id)
-        info = json.loads(webpage)
-        song_url = info['song']['url']
+        song_id = mobj.group('id')
+        info_url = "http://ex.fm/api/v3/song/%s" % song_id
+        info = self._download_json(info_url, song_id)['song']
+        song_url = info['url']
         if re.match(self._SOUNDCLOUD_URL, song_url) is not None:
             self.to_screen('Soundcloud song detected')
-            return self.url_result(song_url.replace('/stream',''), 'Soundcloud')
-        return [{
+            return self.url_result(song_url.replace('/stream', ''), 'Soundcloud')
+        return {
             'id': song_id,
             'url': song_url,
             'ext': 'mp3',
-            'title':       info['song']['title'],
-            'thumbnail':   info['song']['image']['large'],
-            'uploader':    info['song']['artist'],
-            'view_count':  info['song']['loved_count'],
-        }]
+            'title': info['title'],
+            'thumbnail': info['image']['large'],
+            'uploader': info['artist'],
+            'view_count': info['loved_count'],
+        }