[Python-Dev] Re: "groupby" iterator

[Greg Ewing]

Thomas Heller <theller at python.net>:

> The latter has another advantage (or is this a disadvantage of the
> former?): You can invoke
> 
>   lambda x: x.something
> 
> with a keyword arg, which would not be possible with a C implemented
> function, I assume.

If you're asking whether a C function can have a keyword argument
whose name is determined at runtime, I think that could be arranged --
it would just be a matter of concocting the appropriate arguments to
PyArg_ParseTupleAndKeywords dynamically.

As to a user-friendly syntax for invoking it, maybe something like

   arg.x.something

Greg Ewing, Computer Science Dept, +--------------------------------------+
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