[Python-checkins] r62521 - python/trunk/Doc/reference/expressions.rst

[Nick Coghlan]

georg.brandl wrote:
> Author: georg.brandl
> Date: Sun Apr 27 11:39:59 2008
> New Revision: 62521
> 
> Log:
> #2677: add note that not all functions may accept keyword args.
> 
> 
> Modified:
>    python/trunk/Doc/reference/expressions.rst
> 
> Modified: python/trunk/Doc/reference/expressions.rst
> ==============================================================================
> --- python/trunk/Doc/reference/expressions.rst	(original)
> +++ python/trunk/Doc/reference/expressions.rst	Sun Apr 27 11:39:59 2008
> @@ -663,6 +663,14 @@
>  raised.  Otherwise, the list of filled slots is used as the argument list for
>  the call.
>  
> +.. note::
> +   
> +   An implementation may provide builtin functions whose positional parameters do
> +   not have names, even if they are 'named' for the purpose of documentation, and
> +   which therefore cannot be supplied by keyword.  In CPython, this is the case for
> +   functions implemented in C that use :cfunc:`PyArg_ParseTuple` to parse their
> +   arguments.

You can also use *args to achieve this for any Python function.

Cheers,
Nick.


-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
---------------------------------------------------------------
             http://www.boredomandlaziness.org