Don't print newline is target==None in Progbar.update()
@@ -345,7 +345,7 @@ class Progbar(object):
sys.stdout.write(info)
sys.stdout.flush()
- if current >= self.target:
+ if current >= self.target and self.target is not -1:
sys.stdout.write('\n')
elif self.verbose == 2:
