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Issue 1163367: Clarify super() docs. Also, fix-up the markup and XXX comment.

This commit is contained in:
Raymond Hettinger 2008-12-06 11:44:00 +00:00
parent 40c509d0b6
commit 518d8da05c
1 changed files with 9 additions and 8 deletions
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17
Doc/library/functions.rst
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@ -1037,9 +1037,7 @@ are always available. They are listed here in alphabetical order.
.. function:: super([type[, object-or-type]])
.. XXX updated as per http://www.artima.com/weblogs/viewpost.jsp?thread=208549 but needs checking
Return a "super" object that acts like the superclass of *type*.
Return a *super* object that acts as a proxy to superclasses of *type*.
If the second argument is omitted the super object returned is unbound. If
the second argument is an object, ``isinstance(obj, type)`` must be true. If
@ -1047,8 +1045,8 @@ are always available. They are listed here in alphabetical order.
Calling :func:`super` without arguments is equivalent to ``super(this_class,
first_arg)``.
There are two typical use cases for "super". In a class hierarchy with
single inheritance, "super" can be used to refer to parent classes without
There are two typical use cases for :func:`super`. In a class hierarchy with
single inheritance, :func:`super` can be used to refer to parent classes without
naming them explicitly, thus making the code more maintainable. This use
closely parallels the use of "super" in other programming languages.
@ -1072,9 +1070,12 @@ are always available. They are listed here in alphabetical order.
It does so by implementing its own :meth:`__getattribute__` method for searching
parent classes in a predictable order that supports cooperative multiple inheritance.
Accordingly, :func:`super` is undefined for implicit lookups using statements or
operators such as ``super()[name]``. Also, :func:`super` is not
limited to use inside methods: under the hood it searches the stack
frame for the class (``__class__``) and the first argument.
operators such as ``super()[name]``.
Also note that :func:`super` is not limited to use inside methods. The
two argument specifies the arguments exactly and makes the appropriate
references. The zero argument form automatically searches the stack frame
for the class (``__class__``) and the first argument.
.. function:: tuple([iterable])