[infoq] Simplify and use unicode_literals

youtube_dl/extractor/infoq.py

@@ -1,27 +1,27 @@
+from __future__ import unicode_literals
+
 import base64
 import re
 
 from .common import InfoExtractor
 from ..utils import (
     compat_urllib_parse,
-
-    ExtractorError,
 )
 
 
 class InfoQIE(InfoExtractor):
     _VALID_URL = r'^(?:https?://)?(?:www\.)?infoq\.com/[^/]+/[^/]+$'
     _TEST = {
-        u"name": u"InfoQ",
+        "name": "InfoQ",
-        u"url": u"http://www.infoq.com/presentations/A-Few-of-My-Favorite-Python-Things",
+        "url": "http://www.infoq.com/presentations/A-Few-of-My-Favorite-Python-Things",
-        u"file": u"12-jan-pythonthings.mp4",
+        "file": "12-jan-pythonthings.mp4",
-        u"info_dict": {
+        "info_dict": {
-            u"description": u"Mike Pirnat presents some tips and tricks, standard libraries and third party packages that make programming in Python a richer experience.",
+            "description": "Mike Pirnat presents some tips and tricks, standard libraries and third party packages that make programming in Python a richer experience.",
-            u"title": u"A Few of My Favorite [Python] Things"
+            "title": "A Few of My Favorite [Python] Things",
+        },
+        "params": {
+            "skip_download": True,
         },
-        u"params": {
-            u"skip_download": True
-        }
     }
 
     def _real_extract(self, url):
@@ -31,32 +31,25 @@ class InfoQIE(InfoExtractor):
         self.report_extraction(url)
 
         # Extract video URL
-        mobj = re.search(r"jsclassref ?= ?'([^']*)'", webpage)
+        encoded_id = self._search_regex(r"jsclassref ?= ?'([^']*)'", webpage, 'encoded id')
-        if mobj is None:
+        real_id = compat_urllib_parse.unquote(base64.b64decode(encoded_id.encode('ascii')).decode('utf-8'))
-            raise ExtractorError(u'Unable to extract video url')
-        real_id = compat_urllib_parse.unquote(base64.b64decode(mobj.group(1).encode('ascii')).decode('utf-8'))
         video_url = 'rtmpe://video.infoq.com/cfx/st/' + real_id
 
         # Extract title
         video_title = self._search_regex(r'contentTitle = "(.*?)";',
-            webpage, u'title')
+            webpage, 'title')
 
         # Extract description
         video_description = self._html_search_regex(r'<meta name="description" content="(.*)"(?:\s*/)?>',
-            webpage, u'description', fatal=False)
+            webpage, 'description', fatal=False)
 
         video_filename = video_url.split('/')[-1]
         video_id, extension = video_filename.split('.')
 
-        info = {
+        return {
             'id': video_id,
             'url': video_url,
-            'uploader': None,
-            'upload_date': None,
             'title': video_title,
             'ext': extension, # Extension is always(?) mp4, but seems to be flv
-            'thumbnail': None,
             'description': video_description,
         }
-
-        return [info]