play around with pickle

mixed_pickles.py

@@ -0,0 +1,30 @@
+from __future__ import division, print_function
+
+import cPickle as pickle
+
+
+class SomeObject(object):
+    def __eq__(self, other):
+        """Default __eq__ would always return False."""
+        return True
+
+    pass
+
+a = (1, 2)
+b = "zwei"
+c = [3, 4, 5, 6]
+d = c
+e = SomeObject()
+f = e
+before_pickle = [a, b, c, d, e, f]
+
+after_pickle = pickle.loads(pickle.dumps(before_pickle))
+
+# should get equal objects, but not the same:
+for i in range(6):
+    assert before_pickle[i] == after_pickle[i]
+    assert id(before_pickle[i]) != id(after_pickle[i])
+
+# same objects stay the same:
+assert id(after_pickle[2]) == id(after_pickle[3])
+assert id(after_pickle[4]) == id(after_pickle[5])