[Python-ideas] Short form for keyword arguments and dicts

[Ron Adam]

On 06/24/2013 01:03 PM, Terry Reedy wrote:
>> While it looks a little magical, the proposed syntax would be an
>> improvement (especially when there are many arguments):
>>
>>>>> print('{spam} and {eggs}'.format(=spam, =eggs))
>
> It looks pretty hideous to me ;-).
> And it still has repetition ;-).


In larger programs, data like this would probably be in a dictionary or 
some other structure.

There may be a large dictionary of many foods.  And we would just use 
.format_map and not have any repetition where those are used.

      print('{spam} and {eggs}'.format_map(foods))



I think it would also be useful to get a sub_view of a dictionary.

      breakfast = ['spam', 'eggs']

      print('{spam} and {eggs}'.format_map(foods.sub_view(breakfast)))


The food dictionary might also have lunch items and dinner items in it, and 
we don't want to serve dinner for breakfast by mistake.  ;-)


Cheers,
    Ron