From 829cdb8f90ea72a6912480a2c9f681a3899fbfeb Mon Sep 17 00:00:00 2001
From: Joe Taylor <joe@zerog.aero>
Date: Fri, 12 Jun 2020 22:03:41 +0200
Subject: [PATCH 1/2] Bump version to 0.1.4

---
 wysdom/__version__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wysdom/__version__.py b/wysdom/__version__.py
index 9d91e7f..d0727ee 100644
--- a/wysdom/__version__.py
+++ b/wysdom/__version__.py
@@ -1,3 +1,3 @@
-VERSION = (0, 1, 3)
+VERSION = (0, 1, 4)
 
 __version__ = '.'.join(map(str, VERSION))

From bc859f6a26a545f0dd8f16367504e2218d8958cb Mon Sep 17 00:00:00 2001
From: Joe Taylor <joe@zerog.aero>
Date: Fri, 12 Jun 2020 22:05:11 +0200
Subject: [PATCH 2/2] Update UserProperty so default and default_function don't
 set a value persistently

---
 features/dict.feature               | 38 +++++++++++++++++++++++++----
 wysdom/user_objects/UserProperty.py |  4 +--
 2 files changed, 35 insertions(+), 7 deletions(-)

diff --git a/features/dict.feature b/features/dict.feature
index 496f63d..1a794af 100644
--- a/features/dict.feature
+++ b/features/dict.feature
@@ -9,10 +9,10 @@ Feature: Test dictionary DOM objects
         "first_name": "Marge",
         "last_name": "Simpson",
         "current_address": {
-        "first_line": "123 Fake Street",
-        "second_line": "",
-        "city": "Springfield",
-        "postal_code": 58008
+          "first_line": "123 Fake Street",
+          "second_line": "",
+          "city": "Springfield",
+          "postal_code": 58008
         },
         "previous_addresses": [{
           "first_line": "742 Evergreen Terrace",
@@ -199,4 +199,32 @@ Feature: Test dictionary DOM objects
     And the following statement raises ValidationError
       """
       dict_module.Person(example_dict_input)
-      """
\ No newline at end of file
+      """
+
+  Scenario: Defaults should not be written as permanent values when accessed
+
+    Given the Python module dict_module.py
+    When we execute the following python code:
+      """
+      example_dict_input = {
+        "first_name": "Marge",
+        "last_name": "Simpson",
+        "previous_addresses": [{
+          "first_line": "742 Evergreen Terrace",
+          "city": "Springfield",
+          "postal_code": 58008
+        }]
+      }
+      example = dict_module.Person(example_dict_input)
+      original_address = example.current_address
+      example.previous_addresses[0] = {
+        "first_line": "123 Fake Street",
+        "city": "Springfield",
+        "postal_code": 58008
+      }
+      """
+    Then the following statements are true:
+      """
+      example.current_address.first_line == "123 Fake Street"
+      example.previous_addresses[0].first_line == "123 Fake Street"
+      """
diff --git a/wysdom/user_objects/UserProperty.py b/wysdom/user_objects/UserProperty.py
index 452b4cd..8333431 100644
--- a/wysdom/user_objects/UserProperty.py
+++ b/wysdom/user_objects/UserProperty.py
@@ -72,9 +72,9 @@ def __get__(
                 "UserProperty is not valid as a class data descriptor")
         if self.name not in instance:
             if self.default_function:
-                instance[self.name] = self.default_function(instance)
+                return self.default_function(instance)
             else:
-                instance[self.name] = self.default
+                return self.default
         return instance[self.name]
 
     def __set__(