Add dotdict.py.

voussoirkit/dotdict.py

@@ -0,0 +1,22 @@
+from voussoirkit import sentinel
+
+NO_DEFAULT = sentinel.Sentinel('NO_DEFAULT')
+
+class DotDict:
+    def __init__(self, default=NO_DEFAULT, **kwargs):
+        self.__default = default
+        self.__dict__.update(**kwargs)
+
+    def __getattr__(self, key):
+        try:
+            return self.__dict__[key]
+        except KeyError:
+            if self.__default is not NO_DEFAULT:
+                return self.__default
+            raise
+
+    def __setattr__(self, key, value):
+        self.__dict__[key] = value
+
+    def __repr__(self):
+        return f'DotDict {self.__dict__}'