diff --git a/virtinst/progress.py b/virtinst/progress.py
index a27108b1..e9a243b1 100644
--- a/virtinst/progress.py
+++ b/virtinst/progress.py
@@ -9,9 +9,9 @@
 #   Lesser General Public License for more details.
 #
 #   You should have received a copy of the GNU Lesser General Public
-#   License along with this library; if not, write to the 
-#      Free Software Foundation, Inc., 
-#      59 Temple Place, Suite 330, 
+#   License along with this library; if not, write to the
+#      Free Software Foundation, Inc.,
+#      59 Temple Place, Suite 330,
 #      Boston, MA  02111-1307  USA
 
 # This file is part of urlgrabber, a high-level cross-protocol url-grabber
@@ -113,7 +113,7 @@ class BaseMeter:
         self.last_amount_read = 0
         self.last_update_time = None
         self.re = RateEstimator()
-        
+
     def start(self, filename=None, url=None, basename=None,
               size=None, now=None, text=None):
         self.filename = filename
@@ -131,7 +131,7 @@ class BaseMeter:
         self.last_amount_read = 0
         self.last_update_time = now
         self._do_start(now)
-        
+
     def _do_start(self, now=None):
         pass
 
@@ -158,7 +158,7 @@ class BaseMeter:
 
     def _do_end(self, amount_read, now=None):
         pass
-        
+
 #  This is kind of a hack, but progress is gotten from grabber which doesn't
 # know about the total size to download. So we do this so we can get the data
 # out of band here. This will be "fixed" one way or anther soon.
@@ -173,7 +173,7 @@ def text_meter_total_size(size, downloaded=0):
 #
 #       update: No size (minimal: 17 chars)
 #       -----------------------------------
-# <text>                          <rate> | <current size> <elapsed time> 
+# <text>                          <rate> | <current size> <elapsed time>
 #  8-48                          1    8  3             6 1            9 5
 #
 # Order: 1. <text>+<current size> (17)
@@ -208,7 +208,7 @@ def text_meter_total_size(size, downloaded=0):
 #
 #       end
 #       ---
-# <text>                                 | <current size> <elapsed time> 
+# <text>                                 | <current size> <elapsed time>
 #  8-56                                  3             6 1            9 5
 #
 # Order: 1. <text>                ( 8)
@@ -341,7 +341,7 @@ class RateEstimator:
         self.last_update_time = now
         self.last_amount_read = 0
         self.ave_rate = None
-        
+
     def update(self, amount_read, now=None):
         if now is None: now = time.time()
         # libcurl calls the progress callback when fetching headers
@@ -365,7 +365,7 @@ class RateEstimator:
                 time_diff, read_diff, self.ave_rate, self.timescale)
         self.last_amount_read = amount_read
         #print 'results', time_diff, read_diff, self.ave_rate
-        
+
     #####################################################################
     # result methods
     def average_rate(self):
@@ -401,14 +401,14 @@ class RateEstimator:
         epsilon = time_diff / timescale
         if epsilon > 1: epsilon = 1.0
         return self._rolling_ave(time_diff, read_diff, last_ave, epsilon)
-    
+
     def _rolling_ave(self, time_diff, read_diff, last_ave, epsilon):
         """perform a "rolling average" iteration
         a rolling average "folds" new data into an existing average with
         some weight, epsilon.  epsilon must be between 0.0 and 1.0 (inclusive)
         a value of 0.0 means only the old value (initial value) counts,
         and a value of 1.0 means only the newest value is considered."""
-        
+
         try:
             recent_rate = read_diff / time_diff
         except ZeroDivisionError:
@@ -437,7 +437,7 @@ class RateEstimator:
         rt = int(rt)
         if shift <= 0: return rt
         return float(int(rt) >> shift << shift)
-        
+
 
 def format_time(seconds, use_hours=0):
     if seconds is None or seconds < 0:
@@ -455,7 +455,7 @@ def format_time(seconds, use_hours=0):
             return '%02i:%02i:%02i' % (hours, minutes, seconds)
         else:
             return '%02i:%02i' % (minutes, seconds)
-            
+
 def format_number(number, SI=0, space=' '):
     """Turn numbers into human-readable metric-like numbers"""
     symbols = ['',  # (none)
@@ -467,14 +467,14 @@ def format_number(number, SI=0, space=' '):
                'E', # exa
                'Z', # zetta
                'Y'] # yotta
-    
+
     if SI: step = 1000.0
     else: step = 1024.0
 
     thresh = 999
     depth = 0
     max_depth = len(symbols) - 1
-    
+
     # we want numbers between 0 and thresh, but don't exceed the length
     # of our list.  In that event, the formatting will be screwed up,
     # but it'll still show the right number.
@@ -492,5 +492,5 @@ def format_number(number, SI=0, space=' '):
         format = '%.1f%s%s'
     else:
         format = '%.0f%s%s'
-        
+
     return(format % (float(number or 0), space, symbols[depth]))