Cleanup (pep8, flakes)

ivatar/utils.py

@@ -1,10 +1,10 @@
 import random
 import string
 
+
 def random_string(len=10):
     '''
     Return some random string with default length 10
     '''
     return ''.join(random.SystemRandom().choice(
-        string.ascii_lowercase +
-        string.digits) for _ in range(10))
+        string.ascii_lowercase + string.digits) for _ in range(10))