flake8 cleanups, ununsed imports and variables cleanup, changed register_diagnostics to use reverse_lazy instead of reverse

apps/common/utils.py

@@ -94,7 +94,7 @@ def pretty_size(size, suffixes=None):
 
 def pretty_size_10(size):
     return pretty_size(
-        size, 
+        size,
         suffixes=[
             (u'B', 1000L), (u'K', 1000000L), (u'M', 1000000000L),
             (u'G', 1000000000000L), (u'T', 1000000000000000L)
@@ -302,12 +302,12 @@ def return_type(value):
         return ','.join(list(value))
     else:
         return value
-        
+
 
 # http://stackoverflow.com/questions/4248399/page-range-for-printing-algorithm
 def parse_range(astr):
-    result=set()
+    result = set()
     for part in astr.split(u','):
-        x=part.split(u'-')
-        result.update(range(int(x[0]),int(x[-1])+1))
+        x = part.split(u'-')
+        result.update(range(int(x[0]), int(x[-1]) + 1))
     return sorted(result)