Replaced im_func and im_self by __func__ and __self__.

The new names are Python 3 compatible.

django/dispatch/dispatcher.py

@@ -6,8 +6,8 @@ from django.dispatch import saferef
 WEAKREF_TYPES = (weakref.ReferenceType, saferef.BoundMethodWeakref)
 
 def _make_id(target):
-    if hasattr(target, 'im_func'):
-        return (id(target.im_self), id(target.im_func))
+    if hasattr(target, '__func__'):
+        return (id(target.__self__), id(target.__func__))
     return id(target)
 
 class Signal(object):

django/dispatch/saferef.py

@@ -19,11 +19,11 @@ def safeRef(target, onDelete = None):
         goes out of scope with the reference object, (either a
         weakref or a BoundMethodWeakref) as argument.
     """
-    if hasattr(target, 'im_self'):
-        if target.im_self is not None:
+    if hasattr(target, '__self__'):
+        if target.__self__ is not None:
             # Turn a bound method into a BoundMethodWeakref instance.
             # Keep track of these instances for lookup by disconnect().
-            assert hasattr(target, 'im_func'), """safeRef target %r has im_self, but no im_func, don't know how to create reference"""%( target,)
+            assert hasattr(target, '__func__'), """safeRef target %r has __self__, but no __func__, don't know how to create reference"""%( target,)
             reference = get_bound_method_weakref(
                 target=target,
                 onDelete=onDelete
@@ -97,9 +97,9 @@ class BoundMethodWeakref(object):
         """Return a weak-reference-like instance for a bound method
 
         target -- the instance-method target for the weak
-            reference, must have im_self and im_func attributes
+            reference, must have __self__ and __func__ attributes
             and be reconstructable via:
-                target.im_func.__get__( target.im_self )
+                target.__func__.__get__( target.__self__ )
             which is true of built-in instance methods.
         onDelete -- optional callback which will be called
             when this weak reference ceases to be valid
@@ -128,10 +128,10 @@ class BoundMethodWeakref(object):
                         )
         self.deletionMethods = [onDelete]
         self.key = self.calculateKey( target )
-        self.weakSelf = weakref.ref(target.im_self, remove)
-        self.weakFunc = weakref.ref(target.im_func, remove)
-        self.selfName = str(target.im_self)
-        self.funcName = str(target.im_func.__name__)
+        self.weakSelf = weakref.ref(target.__self__, remove)
+        self.weakFunc = weakref.ref(target.__func__, remove)
+        self.selfName = str(target.__self__)
+        self.funcName = str(target.__func__.__name__)
     
     def calculateKey( cls, target ):
         """Calculate the reference key for this reference
@@ -139,7 +139,7 @@ class BoundMethodWeakref(object):
         Currently this is a two-tuple of the id()'s of the
         target object and the target function respectively.
         """
-        return (id(target.im_self),id(target.im_func))
+        return (id(target.__self__),id(target.__func__))
     calculateKey = classmethod( calculateKey )
     
     def __str__(self):
@@ -201,9 +201,9 @@ class BoundNonDescriptorMethodWeakref(BoundMethodWeakref):
         """Return a weak-reference-like instance for a bound method
 
         target -- the instance-method target for the weak
-            reference, must have im_self and im_func attributes
+            reference, must have __self__ and __func__ attributes
             and be reconstructable via:
-                target.im_func.__get__( target.im_self )
+                target.__func__.__get__( target.__self__ )
             which is true of built-in instance methods.
         onDelete -- optional callback which will be called
             when this weak reference ceases to be valid
@@ -211,9 +211,9 @@ class BoundNonDescriptorMethodWeakref(BoundMethodWeakref):
             collected).  Should take a single argument,
             which will be passed a pointer to this object.
         """
-        assert getattr(target.im_self, target.__name__) == target, \
+        assert getattr(target.__self__, target.__name__) == target, \
                ("method %s isn't available as the attribute %s of %s" %
-                (target, target.__name__, target.im_self))
+                (target, target.__name__, target.__self__))
         super(BoundNonDescriptorMethodWeakref, self).__init__(target, onDelete)
 
     def __call__(self):

tests/regressiontests/decorators/tests.py

@@ -220,7 +220,7 @@ class MethodDecoratorTests(TestCase):
         self.assertEqual(getattr(Test.method, 'myattr2', False), True)
 
         self.assertEqual(Test.method.__doc__, 'A method')
-        self.assertEqual(Test.method.im_func.__name__, 'method')
+        self.assertEqual(Test.method.__func__.__name__, 'method')
 
 
 class XFrameOptionsDecoratorsTests(TestCase):