Add newline, spaces on string format

Add newline on end of file, put spaces around the string operator (pep8/pylint).

IPython/lib/display.py

@@ -1,51 +1,51 b''
 """Various display related classes.
 
 Authors : MinRK, dannystaple
 """
 import urllib
 
 class YouTubeVideo(object):
     """Class for embedding a YouTube Video in an IPython session, based on its video id.
 
     e.g. to embed the video on this page:
 
     http://www.youtube.com/watch?v=foo
 
     you would do:
 
     vid = YouTubeVideo("foo")
     display(vid)
     
     To start from 30 seconds:
     
     vid = YouTubeVideo("abc", start=30)
     display(vid)
     
     To calculate seconds from time as hours, minutes, seconds use:
     start=int(timedelta(hours=1, minutes=46, seconds=40).total_seconds())
 
     Other parameters can be provided as documented at 
     https://developers.google.com/youtube/player_parameters#parameter-subheader
     """
 
     def __init__(self, id, width=400, height=300, **kwargs):
         self.id = id
         self.width = width
         self.height = height
         self.params = kwargs
 
     def _repr_html_(self):
         """return YouTube embed iframe for this video id"""
         if self.params:
             params = "?" + urllib.urlencode(self.params)
         else:
             params = ""
         return """
             <iframe
                 width="%i"
                 height="%i"
                 src="http://www.youtube.com/embed/%s%s"
                 frameborder="0"
                 allowfullscreen
             ></iframe>
-        """%(self.width, self.height, self.id, params)
  No newline at end of file
+        """ % (self.width, self.height, self.id, params)