[Python-Dev] AC Derby and accepting None for optional positional arguments
larry at hastings.org
Thu Jan 16 07:28:57 CET 2014
On 01/15/2014 10:21 PM, Georg Brandl wrote:
> Am 16.01.2014 05:35, schrieb Ryan Smith-Roberts:
>> On Wed, Jan 15, 2014 at 7:57 PM, Ryan Smith-Roberts <rmsr at lab.net
>> <mailto:rmsr at lab.net>> wrote:
>> socket.getservbyname(servicename[, protocolname])
>> socket.getservbyname(servicename, protocolname=None)
>> Here is a more complicated example, since the above does technically have an
>> alternative fix:
>> sockobj.sendmsg(buffers[, ancdata[, flags[, address]]])
>> sockobj.sendmsg(buffers, ancdata=None, flags=0, address=None)
> As far as I understand you should convert these with the "optional group" syntax
> (i.e. brackets).
That's correct. Functions that use PyArg_ParseTuple should continue to
use PyArg_ParseTuple. Ryan: add a "/" on a line by itself after the
last parameter of each of these functions, and that will let you use the
[ ] syntax too. Please see the Argument Clinic howto for more.
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