more Parameters fixup

datetimejson.py

@@ -0,0 +1,33 @@
+import datetime
+import json
+
+
+class DatetimeEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, (datetime.date, datetime.datetime)):
+            return obj.isoformat()
+
+
+def print_and_return(obj):
+    for k, v in obj.items():
+        if not isinstance(v, str):
+            continue
+        try:
+            dt = datetime.datetime.fromisoformat(v)
+        except Exception:
+            pass
+        try:
+            dt = datetime.date.fromisoformat(v)
+        except Exception:
+            pass
+        obj[k] = dt
+    return obj
+
+
+d = dict(user=dict(joined=datetime.datetime.now()), other_user=datetime.date.today())
+
+s = json.dumps(d, cls=DatetimeEncoder)
+print(s)
+print()
+
+print(json.loads(s, object_hook=print_and_return))