Merge pull request #560 from phihag/fix-to_screen-mode

to_screen: Only encode when output stream is binary

diff --git a/youtube_dl/FileDownloader.py b/youtube_dl/FileDownloader.py
index 6d52dc923d67fcc4fe3b4e0a2046f601a04e855e..4e9b55f49268fbf22bf5c6057ee13de94b663007 100644 (file)
--- a/youtube_dl/FileDownloader.py
+++ b/youtube_dl/FileDownloader.py
@@ -179,7 +179,7 @@ class FileDownloader(object):
                if not self.params.get('quiet', False):
                        terminator = [u'\n', u''][skip_eol]
                        output = message + terminator
-                       if 'b' not in self._screen_file.mode or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
+                       if 'b' in getattr(self._screen_file, 'mode', '') or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
                                output = output.encode(preferredencoding(), 'ignore')
                        self._screen_file.write(output)
                        self._screen_file.flush()