c[:]()

[Marc 'BlackJack' Rintsch]

In <1180878080.630213.258230 at q75g2000hsh.googlegroups.com>,
Stebanoid at gmail.com wrote:

> On 30    , 22:48, "Warren Stringer" <war... at muse.com> wrote:
>> I want to call every object in a tupple, like so:
>>
>> #------------------------------------------
>> def a: print 'a'
>> def b: print 'b'
>> c = (a,b)
>>
>> >>>c[:]()  # i wanna
>>
>>  TypeError: 'tupple' object is not callable
>>
>> >>>c[0]()  # expected
>> a
>> >>>c[:][0] # huh?
>> a
>> >>> [i() for i in c] # too long and ...huh?
>>
>> a
>> b
>> [None,None]
>> #------------------------------------------
>>
>> bla-bla-bla......
> 
> 
> you can write:
>>>> map(lambda x: x(), c)
> 
> I think that it is good idea to use "map()" function for doing
> somethimg with each element of a sequence, if the order of a actions
> not important.
> 
> it is easy to read and understandable.

And has the same issue as a list comprehension if all you want is the side
effect of the calls: a useless temporary list full of `None`\s is build.

Ciao,
	Marc 'BlackJack' Rintsch