Mercurial > cpython-lru_cache-weakref
diff Doc/lib/libfunctional.tex @ 34704:3098efe42a0f legacy-trunk
Make functional.partial() more closely match the spec by emulating some useful features of regular functions:
* Made weak referencable.
* Allow attribute access so a user can set __name__, __doc__, etc.
| author | Raymond Hettinger <python@rcn.com> |
|---|---|
| date | Tue, 08 Mar 2005 07:15:36 +0000 |
| parents | b4315e67edf5 |
| children | fc442c2eb0cf |
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--- a/Doc/lib/libfunctional.tex Tue Mar 08 06:14:50 2005 +0000 +++ b/Doc/lib/libfunctional.tex Tue Mar 08 07:15:36 2005 +0000 @@ -44,6 +44,7 @@ two: \begin{verbatim} >>> basetwo = partial(int, base=2) + >>> basetwo.__doc__('Convert base 2 string to an int.') >>> basetwo('10010') 18 \end{verbatim} @@ -71,3 +72,10 @@ The keyword arguments that will be supplied when the \class{partial} object is called. \end{memberdesc} + +\class{partial} objects are like \class{function} objects in that they are +callable, weak referencable, and can have attributes. There are some +important differences. For instance, the \member{__name__} and +\member{__doc__} attributes are not created automatically. Also, +\class{partial} objects defined in classes behave like static methods and +do not transform into bound methods during instance attribute look-up.