.. productionlist::
classdef: [`decorators`] "class" `classname` [`inheritance`] ":" `suite`
- inheritance: "(" [`argument_list` [","] ] ")"
+ inheritance: "(" [`argument_list` [","] | `comprehension`] ")"
classname: `identifier`
-
A class definition is an executable statement. The inheritance list usually
gives a list of base classes (see :ref:`metaclasses` for more advanced uses), so
each item in the list should evaluate to a class object which allows
Class creation can be customized heavily using :ref:`metaclasses <metaclasses>`.
-Classes can also be decorated; as with functions, ::
+Classes can also be decorated: just like when decorating functions, ::
@f1(arg)
@f2
class Foo: pass
Foo = f1(arg)(f2(Foo))
+The evaluation rules for the decorator expressions are the same as for function
+decorators. The result must be a class object, which is then bound to the class
+name.
+
**Programmer's note:** Variables defined in the class definition are class
attributes; they are shared by instances. Instance attributes can be set in a
method with ``self.name = value``. Both class and instance attributes are