Add: Decorator cached_property

module/base/decorator.py

@@ -67,3 +67,23 @@ class Config:
             return wrapper
 
         return decorate
+
+
+class cached_property:
+    """
+    cached-property from https://github.com/pydanny/cached-property
+
+    A property that is only computed once per instance and then replaces itself
+    with an ordinary attribute. Deleting the attribute resets the property.
+    Source: https://github.com/bottlepy/bottle/commit/fa7733e075da0d790d809aa3d2f53071897e6f76
+    """
+
+    def __init__(self, func):
+        self.func = func
+
+    def __get__(self, obj, cls):
+        if obj is None:
+            return self
+
+        value = obj.__dict__[self.func.__name__] = self.func(obj)
+        return value