PEP8 cleanups, style cleanups, unused imports

apps/common/wizard.py

@@ -1,4 +1,4 @@
-'''Common abstract classes for forms.'''
+"""Common abstract classes for forms."""
 try:
     import cPickle as pickle
 except ImportError:
@@ -15,13 +15,13 @@ __all__ = ('security_hash', 'BoundFormWizard')
 
 
 def security_hash_new(form, exclude=None, *args):
-    '''
+    """
     Calculates a security hash for the given Form/FormSet instance.
 
     This creates a list of the form field names/values in a deterministic
     order, pickles the result with the SECRET_KEY setting, then takes an md5
     hash of that.
-    '''
+    """
 
     data = []
     if exclude is None:
@@ -52,20 +52,20 @@ def security_hash_new(form, exclude=None, *args):
 
 
 class BoundFormWizard(FormWizard):
-    '''
+    """
     Render prev_fields as a list of bound form fields in the template
     context rather than raw html.
-    '''
-    
+    """
+
     def security_hash(self, request, form):
-        '''
+        """
         Calculates the security hash for the given HttpRequest and
         Form/FormSet instances.
 
         Subclasses may want to take into account request-specific information,
         such as the IP address.
-        '''
-        
+        """
+
         return security_hash_new(form)
 
     def render(self, form, request, step, context=None):