Merge branch 'v3.3.2'

# Conflicts:
#	tests/test_implementation_checks.py

pure_interface.py

@@ -509,7 +509,7 @@ def __new__(mcs, clsname, bases, attributes, **kwargs):
                     attribute_names, method_signatures = _get_abc_interface_props_and_funcs(base)
                 interface_method_signatures.update(method_signatures)
                 interface_attribute_names.update(attribute_names)
-            elif not issubclass(base, PureInterface) and is_development:
+            elif is_development and not issubclass(base, PureInterface):
                 _check_method_signatures(base.__dict__, base.__name__, interface_method_signatures)
 
         if is_development:
@@ -536,13 +536,17 @@ def __new__(mcs, clsname, bases, attributes, **kwargs):
                                          'Did you forget to inherit from object to make the class concrete?'.format(func.__name__))
         else:  # concrete sub-type
             namespace = attributes
-            class_properties = set(k for k, v in namespace.items() if _is_descriptor(v))
+            class_properties = set()
+            for bt, is_interface in base_types:
+                if not is_interface:
+                    class_properties |= set(k for k, v in bt.__dict__.items() if _is_descriptor(v))
+            class_properties |= set(k for k, v in namespace.items() if _is_descriptor(v))
             abstract_properties.difference_update(class_properties)
             partial_implementation = 'pi_partial_implementation' in namespace
             if partial_implementation:
                 value = namespace.pop('pi_partial_implementation')
                 if not value:
-                    warnings.warn('Partial implmentation is indicated by presence of '
+                    warnings.warn('Partial implementation is indicated by presence of '
                                   'pi_partial_implementation attribute, not it''s value')
 
         # create class

tests/test_implementation_checks.py

@@ -11,6 +11,13 @@
 except ImportError:
     import mock
 
+class ADescriptor(object):
+    def __init__(self, value):
+        self._value = value
+
+    def __get__(self, instance, owner):
+        return self._value
+
 
 class IAnimal(PureInterface):
     @abstractproperty
@@ -260,7 +267,16 @@ class SimpleSimon(object, ISimple):
                 pi_partial_implementation = False
 
         self.assertEqual(warn.call_count, 1)
-        self.assertTrue(warn.call_args[0][0].startswith('Partial implmentation is indicated'))
+        self.assertTrue(warn.call_args[0][0].startswith('Partial implementation is indicated'))
+
+    def test_super_class_properties_detected(self):
+        class HeightDescr(object):
+            height = ADescriptor('really tall')
+
+        class Test(HeightDescr, IPlant):
+            pass
+
+        self.assertEqual(frozenset([]), Test._pi.abstractproperties)
 
 
 class TestPropertyImplementations(unittest.TestCase):