[downloader/common] Modernize

youtube_dl/downloader/common.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import os
 import re
 import sys
@@ -159,14 +161,14 @@ class FileDownloader(object):
 
     def temp_name(self, filename):
         """Returns a temporary filename for the given filename."""
-        if self.params.get('nopart', False) or filename == u'-' or \
+        if self.params.get('nopart', False) or filename == '-' or \
                 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
             return filename
-        return filename + u'.part'
+        return filename + '.part'
 
     def undo_temp_name(self, filename):
-        if filename.endswith(u'.part'):
-            return filename[:-len(u'.part')]
+        if filename.endswith('.part'):
+            return filename[:-len('.part')]
         return filename
 
     def try_rename(self, old_filename, new_filename):
@@ -175,7 +177,7 @@ class FileDownloader(object):
                 return
             os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
         except (IOError, OSError) as err:
-            self.report_error(u'unable to rename file: %s' % compat_str(err))
+            self.report_error('unable to rename file: %s' % compat_str(err))
 
     def try_utime(self, filename, last_modified_hdr):
         """Try to set the last-modified time of the given file."""
@@ -200,10 +202,10 @@ class FileDownloader(object):
 
     def report_destination(self, filename):
         """Report destination filename."""
-        self.to_screen(u'[download] Destination: ' + filename)
+        self.to_screen('[download] Destination: ' + filename)
 
     def _report_progress_status(self, msg, is_last_line=False):
-        fullmsg = u'[download] ' + msg
+        fullmsg = '[download] ' + msg
         if self.params.get('progress_with_newline', False):
             self.to_screen(fullmsg)
         else:
@@ -211,13 +213,13 @@ class FileDownloader(object):
                 prev_len = getattr(self, '_report_progress_prev_line_length',
                                    0)
                 if prev_len > len(fullmsg):
-                    fullmsg += u' ' * (prev_len - len(fullmsg))
+                    fullmsg += ' ' * (prev_len - len(fullmsg))
                 self._report_progress_prev_line_length = len(fullmsg)
-                clear_line = u'\r'
+                clear_line = '\r'
             else:
-                clear_line = (u'\r\x1b[K' if sys.stderr.isatty() else u'\r')
+                clear_line = ('\r\x1b[K' if sys.stderr.isatty() else '\r')
             self.to_screen(clear_line + fullmsg, skip_eol=not is_last_line)
-        self.to_console_title(u'youtube-dl ' + msg)
+        self.to_console_title('youtube-dl ' + msg)
 
     def report_progress(self, percent, data_len_str, speed, eta):
         """Report download progress."""
@@ -233,7 +235,7 @@ class FileDownloader(object):
             percent_str = 'Unknown %'
         speed_str = self.format_speed(speed)
 
-        msg = (u'%s of %s at %s ETA %s' %
+        msg = ('%s of %s at %s ETA %s' %
                (percent_str, data_len_str, speed_str, eta_str))
         self._report_progress_status(msg)
 
@@ -243,37 +245,37 @@ class FileDownloader(object):
         downloaded_str = format_bytes(downloaded_data_len)
         speed_str = self.format_speed(speed)
         elapsed_str = FileDownloader.format_seconds(elapsed)
-        msg = u'%s at %s (%s)' % (downloaded_str, speed_str, elapsed_str)
+        msg = '%s at %s (%s)' % (downloaded_str, speed_str, elapsed_str)
         self._report_progress_status(msg)
 
     def report_finish(self, data_len_str, tot_time):
         """Report download finished."""
         if self.params.get('noprogress', False):
-            self.to_screen(u'[download] Download completed')
+            self.to_screen('[download] Download completed')
         else:
             self._report_progress_status(
-                (u'100%% of %s in %s' %
+                ('100%% of %s in %s' %
                  (data_len_str, self.format_seconds(tot_time))),
                 is_last_line=True)
 
     def report_resuming_byte(self, resume_len):
         """Report attempt to resume at given byte."""
-        self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
+        self.to_screen('[download] Resuming download at byte %s' % resume_len)
 
     def report_retry(self, count, retries):
         """Report retry in case of HTTP error 5xx"""
-        self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
+        self.to_screen('[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
 
     def report_file_already_downloaded(self, file_name):
         """Report file has already been fully downloaded."""
         try:
-            self.to_screen(u'[download] %s has already been downloaded' % file_name)
+            self.to_screen('[download] %s has already been downloaded' % file_name)
         except UnicodeEncodeError:
-            self.to_screen(u'[download] The file has already been downloaded')
+            self.to_screen('[download] The file has already been downloaded')
 
     def report_unable_to_resume(self):
         """Report it was impossible to resume download."""
-        self.to_screen(u'[download] Unable to resume')
+        self.to_screen('[download] Unable to resume')
 
     def download(self, filename, info_dict):
         """Download to a filename using the info from info_dict
@@ -293,7 +295,7 @@ class FileDownloader(object):
 
     def real_download(self, filename, info_dict):
         """Real download process. Redefine in subclasses."""
-        raise NotImplementedError(u'This method must be implemented by subclasses')
+        raise NotImplementedError('This method must be implemented by subclasses')
 
     def _hook_progress(self, status):
         for ph in self._progress_hooks: