reimplement __hash__ with tuple; closes #1

Author: ramalho

11-pythonic-obj/vector2d_v3.py

@@ -79,8 +79,8 @@
 
     >>> v1 = Vector2d(3, 4)
     >>> v2 = Vector2d(3.1, 4.2)
-    >>> hash(v1), hash(v2)
-    (7, 384307168202284039)
+    >>> hash(v1) != hash(v2)
+    True
     >>> len(set([v1, v2]))
     2
 
@@ -122,7 +122,7 @@ def __eq__(self, other):
         return tuple(self) == tuple(other)
 
     def __hash__(self):
-        return hash(self.x) ^ hash(self.y)
+        return hash((self.x, self.y))
 
     def __abs__(self):
         return math.hypot(self.x, self.y)

11-pythonic-obj/vector2d_v3_prophash.py

@@ -81,8 +81,8 @@
 
     >>> v1 = Vector2d(3, 4)
     >>> v2 = Vector2d(3.1, 4.2)
-    >>> hash(v1), hash(v2)
-    (7, 384307168202284039)
+    >>> hash(v1) != hash(v2)
+    True
     >>> len(set([v1, v2]))
     2
 
@@ -131,7 +131,7 @@ def __eq__(self, other):
 
 # BEGIN VECTOR_V3_HASH
     def __hash__(self):
-        return hash(self.x) ^ hash(self.y)
+        return hash((self.x, self.y))
 # END VECTOR_V3_HASH
 
     def __abs__(self):

11-pythonic-obj/vector2d_v3_slots.py

@@ -78,8 +78,8 @@
 
     >>> v1 = Vector2d(3, 4)
     >>> v2 = Vector2d(3.1, 4.2)
-    >>> hash(v1), hash(v2)
-    (7, 384307168202284039)
+    >>> hash(v1) != hash(v2)
+    True
     >>> len(set([v1, v2]))
     2
 
@@ -129,7 +129,7 @@ def __eq__(self, other):
         return tuple(self) == tuple(other)
 
     def __hash__(self):
-        return hash(self.x) ^ hash(self.y)
+        return hash((self.x, self.y))
 
     def __abs__(self):
         return math.hypot(self.x, self.y)