Update default accuracy to None to support null JSON values (#1033)

* removed required prop on response serializers

* delete Pipfile and Pipfile.lock from root directory,changed default accuracy of tags to None

* change test cases for the default accuracy of tags to None

* refactor indentation to support lint checks

* change help_text of TagSerializer in media_serializers

api/catalog/api/examples/audio_responses.py

@@ -22,16 +22,16 @@
     "filesize": 7139840,
     "filetype": "mp3",
     "tags": [
-        {"name": "vocal"},
-        {"name": "female"},
-        {"name": "speed_medium"},
-        {"name": "guitar"},
-        {"name": "strings"},
-        {"name": "energetic"},
-        {"name": "acoustic"},
-        {"name": "vocal"},
-        {"name": "voice"},
-        {"name": "funkyhouse"},
+        {"accuracy": None, "name": "vocal"},
+        {"accuracy": None, "name": "female"},
+        {"accuracy": None, "name": "speed_medium"},
+        {"accuracy": None, "name": "guitar"},
+        {"accuracy": None, "name": "strings"},
+        {"accuracy": None, "name": "energetic"},
+        {"accuracy": None, "name": "acoustic"},
+        {"accuracy": None, "name": "vocal"},
+        {"accuracy": None, "name": "voice"},
+        {"accuracy": None, "name": "funkyhouse"},
     ],
     "alt_files": None,
     "attribution": '"Wish You Were Here" by The.madpix.project is licensed under CC BY-NC-SA 3.0. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/3.0/.',  # noqa: E501,

api/catalog/api/examples/image_responses.py

@@ -21,27 +21,27 @@
     "filesize": None,
     "filetype": None,
     "tags": [
-        {"name": "tree"},
-        {"name": "bark"},
-        {"name": "texture"},
-        {"name": "wood"},
-        {"name": "nature"},
-        {"name": "pattern"},
-        {"name": "rough"},
-        {"name": "surface"},
-        {"name": "brown"},
-        {"name": "old"},
-        {"name": "background"},
-        {"name": "trunk"},
-        {"name": "natural"},
-        {"name": "forest"},
-        {"name": "detail"},
-        {"name": "lumber"},
-        {"name": "weathered"},
-        {"name": "timber"},
-        {"name": "stump"},
-        {"name": "closeup"},
-        {"name": "root"},
+        {"accuracy": None, "name": "tree"},
+        {"accuracy": None, "name": "bark"},
+        {"accuracy": None, "name": "texture"},
+        {"accuracy": None, "name": "wood"},
+        {"accuracy": None, "name": "nature"},
+        {"accuracy": None, "name": "pattern"},
+        {"accuracy": None, "name": "rough"},
+        {"accuracy": None, "name": "surface"},
+        {"accuracy": None, "name": "brown"},
+        {"accuracy": None, "name": "old"},
+        {"accuracy": None, "name": "background"},
+        {"accuracy": None, "name": "trunk"},
+        {"accuracy": None, "name": "natural"},
+        {"accuracy": None, "name": "forest"},
+        {"accuracy": None, "name": "detail"},
+        {"accuracy": None, "name": "lumber"},
+        {"accuracy": None, "name": "weathered"},
+        {"accuracy": None, "name": "timber"},
+        {"accuracy": None, "name": "stump"},
+        {"accuracy": None, "name": "closeup"},
+        {"accuracy": None, "name": "root"},
     ],
     "attribution": None,
     "fields_matched": [],

api/catalog/api/serializers/media_serializers.py

@@ -277,9 +277,9 @@ class TagSerializer(serializers.Serializer):
         help_text="The name of a detailed tag.",
     )
     accuracy = serializers.FloatField(
-        required=False,
+        default=None,
         help_text="The accuracy of a machine-generated tag. Human-generated "
-        "tags do not have an accuracy field.",
+        "tags have a null accuracy field.",
     )