Fix cdef generator property methods.

Closes github issue #1447.

Cython/Compiler/ParseTreeTransforms.py

@@ -1313,7 +1313,7 @@ class DecoratorTransform(ScopeTrackingTransform, SkipDeclarations):
                 if len(node.decorators) > 1:
                     return self._reject_decorated_property(node, decorator_node)
                 name = node.name
-                node.name = '__get__'
+                node.name = EncodedString('__get__')
                 node.decorators.remove(decorator_node)
                 stat_list = [node]
                 if name in properties:

tests/run/cdef_class_property_decorator_T264.pyx

@@ -26,6 +26,8 @@ cdef class Prop:
     DELETING '2'
     >>> p.prop
     GETTING 'None'
+    >>> list(p.generator_prop)
+    [42]
     """
     cdef _value
     def __init__(self):
@@ -59,3 +61,7 @@ cdef class Prop:
     def my_prop(self):
         print("GETTING '%s' via my_prop" % self._value)
         return self._value
+
+    @property
+    def generator_prop(self):
+        yield 42

tests/run/property_decorator_T593.py

@@ -25,6 +25,9 @@ class Prop(object):
     >>> p.my_prop
     GETTING 'my_prop'
     389
+
+    >>> list(p.generator_prop)
+    [42]
     """
     _value = None
 
@@ -47,3 +50,7 @@ class Prop(object):
     def my_prop(self):
         print("GETTING 'my_prop'")
         return 389
+
+    @property
+    def generator_prop(self):
+        yield 42