[Tutor] Function in a data structure

[Scott Widney]

> Hello All:
>     I'd like to put a function in data structure
>     and execute it as part of processing the
>     structure.
> I have
> >>fd = {'func':[lambda x: x**2]}
> 
> How may I execute the lambda statement which
> is the value for fd['func']?
> I've tried:
>   apply(fd['func'],(2))
>   and apply(fd['func'],2)
>   with no luck
> 
>   Any ideas? Pointers to docs will
>   be most welcome also.
> 
>   using Python 2.2.2
>   TIA 
> -- 

"Rodrigues" already gave you your answer, but there is one thing I wanted to
point out:

Python 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> fd = {'func1':lambda x: x**2, 'func2':lambda x: x**3}
>>> fd['func1'](2)
4
>>> fd['func2'](2)
8
>>> apply(fd['func1'], (2,))
4
>>> apply(fd['func2'], (2,))
8
>>>

You didn't HAVE to put your lambdas in a one item list, though I realize you
may have wanted to....