Hwy doesn't len(None) return zero ?

[Dave Angel]

Stephen Hansen wrote:
> On 6/30/10 11:39 AM, Stef Mientki wrote:
>>   hello,
>>
>> I've lot of functions that returns their result in some kind of tuple /
>> list / array,
>> and if there is no result, these functions return None.
>> Now I'm often what to do something if I've more than 1 element in the
>> result.
>> So I test:
>>
>> if len ( Result ) > 1 :
>>
>> But to prevent exceptions, i've to write ( I often forget)
>> if Result and ( len ( Result ) > 1 ) :
>
> Just do:
>
>    if Result:
>
> You don't have to do a length check > 1; because if Result has a 
> length of 0, it'll be false too. So the above check will catch both 
> None, and empty sequences.
> <snip>
Look closer:  the OP wanted   len(Result) > 1  not   len(Result) > 0.  
For that, you need two checks, for example, as for example:
     if Result and (len(Result)>1):

.
DaveA