[dropbox] Fix title encoding on Python 2

youtube_dl/extractor/dropbox.py

@@ -5,7 +5,7 @@ import os.path
 import re
 
 from .common import InfoExtractor
-from ..utils import compat_urllib_parse
+from ..utils import compat_urllib_parse_unquote
 
 
 class DropboxIE(InfoExtractor):
@@ -23,7 +23,7 @@ class DropboxIE(InfoExtractor):
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
         video_id = mobj.group('id')
-        fn = compat_urllib_parse.unquote(mobj.group('title'))
+        fn = compat_urllib_parse_unquote(mobj.group('title'))
         title = os.path.splitext(fn)[0]
         video_url = url + '?dl=1'
 

youtube_dl/utils.py

@@ -91,11 +91,9 @@ except ImportError:
     compat_subprocess_get_DEVNULL = lambda: open(os.path.devnull, 'w')
 
 try:
-    from urllib.parse import parse_qs as compat_parse_qs
+    from urllib.parse import unquote as compat_urllib_parse_unquote
-except ImportError: # Python 2
+except ImportError:
-    # HACK: The following is the correct parse_qs implementation from cpython 3's stdlib.
+    def compat_urllib_parse_unquote(string, encoding='utf-8', errors='replace'):
-    # Python 2's version is apparently totally broken
-    def _unquote(string, encoding='utf-8', errors='replace'):
         if string == '':
             return string
         res = string.split('%')
@@ -130,6 +128,13 @@ except ImportError: # Python 2
             string += pct_sequence.decode(encoding, errors)
         return string
 
+
+try:
+    from urllib.parse import parse_qs as compat_parse_qs
+except ImportError: # Python 2
+    # HACK: The following is the correct parse_qs implementation from cpython 3's stdlib.
+    # Python 2's version is apparently totally broken
+
     def _parse_qsl(qs, keep_blank_values=False, strict_parsing=False,
                 encoding='utf-8', errors='replace'):
         qs, _coerce_result = qs, unicode
@@ -149,10 +154,12 @@ except ImportError: # Python 2
                     continue
             if len(nv[1]) or keep_blank_values:
                 name = nv[0].replace('+', ' ')
-                name = _unquote(name, encoding=encoding, errors=errors)
+                name = compat_urllib_parse_unquote(
+                    name, encoding=encoding, errors=errors)
                 name = _coerce_result(name)
                 value = nv[1].replace('+', ' ')
-                value = _unquote(value, encoding=encoding, errors=errors)
+                value = compat_urllib_parse_unquote(
+                    value, encoding=encoding, errors=errors)
                 value = _coerce_result(value)
                 r.append((name, value))
         return r