Any body knows a trivial way to enumerate a list with n zero-valued elements?
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Re: lists with zero-valued elements
Nick> Any body knows a trivial way to enumerate a list with n
Nick> zero-valued elements?
I'm not sure what you're asking. I'd enumerate a list with n zero-valued
elements the same way I'd enumerate one with m zero-valued elements:
nelements = len(somelist)
If I wanted to count how many elements were zero, I might do something like:
nzeros = 0
for element in somelist:
if element == 0:
nzeros += 1
or more succinctly:
nzeros = len([element for element in somelist if element == 0])
Skip
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Re: lists with zero-valued elements
Nick Forest wrote:
[color=blue]
> Any body knows a trivial way to enumerate a list with n zero-valued
> elements?[/color]
'enumerate'...? As in, enumerate(n*[0]) ... ?
Alex
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Re: lists with zero-valued elements
Skip Montanaro wrote:
...[color=blue]
> If I wanted to count how many elements were zero, I might do something
> like:
>
> nzeros = 0
> for element in somelist:
> if element == 0:
> nzeros += 1
>
> or more succinctly:
>
> nzeros = len([element for element in somelist if element == 0])[/color]
I'd do somelist.count( 0) -- faster, more direct, and even more succint.
Alex
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