Fixed #7847 -- Removed a whole bunch of unused imports from throughout the codebase. Thanks, julien

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8046 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/dispatch/dispatcher.py

@@ -25,7 +25,7 @@ Internal attributes:
         deletion, (considerably speeds up the cleanup process
         vs. the original code.)
 """
-import types, weakref
+import weakref
 from django.dispatch import saferef, robustapply, errors
 
 __author__ = "Patrick K. O'Brien <pobrien@orbtech.com>"
@@ -129,7 +129,7 @@ def connect(receiver, signal=Any, sender=Any, weak=True):
     """
     if signal is None:
         raise errors.DispatcherTypeError(
-            'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
+            'Signal cannot be None (receiver=%r sender=%r)' % (receiver, sender)
         )
     if weak:
         receiver = saferef.safeRef(receiver, onDelete=_removeReceiver)
@@ -159,7 +159,7 @@ def connect(receiver, signal=Any, sender=Any, weak=True):
     else:
         receivers = signals[signal] = []
     try:
-        current = sendersBack.get( receiverID )
+        current = sendersBack.get(receiverID)
         if current is None:
             sendersBack[ receiverID ] = current = []
         if senderkey not in current:
@@ -199,7 +199,7 @@ def disconnect(receiver, signal=Any, sender=Any, weak=True):
     """
     if signal is None:
         raise errors.DispatcherTypeError(
-            'Signal cannot be None (receiver=%r sender=%r)'%( receiver,sender)
+            'Signal cannot be None (receiver=%r sender=%r)' % (receiver, sender)
         )
     if weak: receiver = saferef.safeRef(receiver)
     senderkey = id(sender)
@@ -226,7 +226,7 @@ def disconnect(receiver, signal=Any, sender=Any, weak=True):
         )
     _cleanupConnections(senderkey, signal)
 
-def getReceivers( sender = Any, signal = Any ):
+def getReceivers(sender=Any, signal=Any):
     """Get list of receivers from global tables
 
     This utility function allows you to retrieve the
@@ -240,7 +240,7 @@ def getReceivers( sender = Any, signal = Any ):
         rather than, for instance a list to which you
         might append new records.
 
-    Normally you would use liveReceivers( getReceivers( ...))
+    Normally you would use liveReceivers(getReceivers(...))
     to retrieve the actual receiver objects as an iterable
     object.
     """
@@ -258,7 +258,7 @@ def liveReceivers(receivers):
     receivers.
     """
     for receiver in receivers:
-        if isinstance( receiver, WEAKREF_TYPES):
+        if isinstance(receiver, WEAKREF_TYPES):
             # Dereference the weak reference.
             receiver = receiver()
             if receiver is not None:
@@ -268,7 +268,7 @@ def liveReceivers(receivers):
 
 
 
-def getAllReceivers( sender = Any, signal = Any ):
+def getAllReceivers(sender=Any, signal=Any):
     """Get list of all receivers from global tables
 
     This gets all dereferenced receivers which should receive
@@ -363,7 +363,7 @@ def send(signal=Any, sender=Anonymous, *arguments, **named):
     return responses
 
 
-def sendExact( signal=Any, sender=Anonymous, *arguments, **named ):
+def sendExact(signal=Any, sender=Anonymous, *arguments, **named ):
     """Send signal only to those receivers registered for exact message
 
     sendExact allows for avoiding Any/Anonymous registered
@@ -403,7 +403,7 @@ def _removeReceiver(receiver):
                     pass
                 else:
                     try:
-                        receivers.remove( receiver )
+                        receivers.remove(receiver)
                     except Exception, err:
                         pass
                 _cleanupConnections(senderkey, signal)
@@ -439,11 +439,11 @@ def _removeSender(senderkey):
     senders.pop(senderkey, None)
 
 
-def _removeBackrefs( senderkey):
+def _removeBackrefs(senderkey):
     """Remove all back-references to this senderkey"""
     for receiver_list in connections.pop(senderkey, {}).values():
         for receiver in receiver_list:
-            _killBackref( receiver, senderkey )
+            _killBackref(receiver, senderkey)
 
 
 def _removeOldBackRefs(senderkey, signal, receiver, receivers):
@@ -473,18 +473,18 @@ def _removeOldBackRefs(senderkey, signal, receiver, receivers):
                             found = 1
                             break
         if not found:
-            _killBackref( oldReceiver, senderkey )
+            _killBackref(oldReceiver, senderkey)
             return True
         return False
         
         
-def _killBackref( receiver, senderkey ):
+def _killBackref(receiver, senderkey):
     """Do the actual removal of back reference from receiver to senderkey"""
     receiverkey = id(receiver)
-    receivers_list = sendersBack.get( receiverkey, () )
+    receivers_list = sendersBack.get(receiverkey, ())
     while senderkey in receivers_list:
         try:
-            receivers_list.remove( senderkey )
+            receivers_list.remove(senderkey)
         except:
             break
     if not receivers_list:

django/dispatch/saferef.py

@@ -1,6 +1,5 @@
 """Refactored "safe reference" from dispatcher.py"""
 import weakref, traceback
-from django.utils.functional import curry
 
 def safeRef(target, onDelete = None):
     """Return a *safe* weak reference to a callable target