diff --git a/django/contrib/syndication/views.py b/django/contrib/syndication/views.py
index 773a1cd7bd..3c84f1f60c 100644
--- a/django/contrib/syndication/views.py
+++ b/django/contrib/syndication/views.py
@@ -60,14 +60,14 @@ class Feed(object):
         except AttributeError:
             return default
         if callable(attr):
-            # Check func_code.co_argcount rather than try/excepting the
+            # Check __code__.co_argcount rather than try/excepting the
             # function and catching the TypeError, because something inside
             # the function may raise the TypeError. This technique is more
             # accurate.
-            if hasattr(attr, 'func_code'):
-                argcount = attr.func_code.co_argcount
+            if hasattr(attr, '__code__'):
+                argcount = attr.__code__.co_argcount
             else:
-                argcount = attr.__call__.func_code.co_argcount
+                argcount = attr.__call__.__code__.co_argcount
             if argcount == 2: # one argument is 'self'
                 return attr(obj)
             else:
diff --git a/django/test/_doctest.py b/django/test/_doctest.py
index ab8f034570..b5d5da970b 100644
--- a/django/test/_doctest.py
+++ b/django/test/_doctest.py
@@ -861,7 +861,7 @@ class DocTestFinder:
         if module is None:
             return True
         elif inspect.isfunction(object):
-            return module.__dict__ is object.func_globals
+            return module.__dict__ is object.__globals__
         elif inspect.isclass(object):
             return module.__name__ == object.__module__
         elif inspect.getmodule(object) is not None:
@@ -926,7 +926,7 @@ class DocTestFinder:
                 if isinstance(val, staticmethod):
                     val = getattr(obj, valname)
                 if isinstance(val, classmethod):
-                    val = getattr(obj, valname).im_func
+                    val = getattr(obj, valname).__func__
 
                 # Recurse to methods, properties, and nested classes.
                 if ((inspect.isfunction(val) or inspect.isclass(val) or
@@ -998,8 +998,8 @@ class DocTestFinder:
                     break
 
         # Find the line number for functions & methods.
-        if inspect.ismethod(obj): obj = obj.im_func
-        if inspect.isfunction(obj): obj = obj.func_code
+        if inspect.ismethod(obj): obj = obj.__func__
+        if inspect.isfunction(obj): obj = obj.__code__
         if inspect.istraceback(obj): obj = obj.tb_frame
         if inspect.isframe(obj): obj = obj.f_code
         if inspect.iscode(obj):