Grant Edwards wrote:
> Python knows how to count. :)
>
> def countFalse(seq):
> return len([v for v in seq if not v])
>
> def countTrue(seq):
> return len([v for v in seq if v])
>
> def truth_test(seq):
> return countTrue(seq) == 1
>
I'd suggest the more direct
def countFalse(seq) :
return sum(1 for v in seq if not v)
def countTrue(seq) :
return sum(1 for v in seq if v)
- not to speak of
def countFalse(seq) :
return sum(not v for v in seq)
def countTrue(seq) :
return sum(bool(v) for v in seq)
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