Little novice program written in Python

[Robert Bossy]

John Machin wrote:
> On Apr 25, 5:44 pm, Robert Bossy <Robert.Bo... at jouy.inra.fr> wrote:
>   
>> Peter Otten wrote:
>>     
>>> Rogério Brito wrote:
>>>       
>>>> i = 2
>>>> while i <= n:
>>>>      if a[i] != 0:
>>>>         print a[i]
>>>>      i += 1
>>>>         
>>> You can spell this as a for-loop:
>>>       
>>> for p in a:
>>>     if p:
>>>         print p
>>>       
>>> It isn't exactly equivalent, but gives the same output as we know that a[0]
>>> and a[1] are also 0.
>>>       
>> If the OP insists in not examining a[0] and a[1], this will do exactly
>> the same as the while version:
>>
>> for p in a[2:]:
>>     if p:
>>         print p
>>
>>     
>
> ... at the cost of almost doubling the amount of memory required.
Indeed. Would it be a sensible proposal that sequence slices should 
return an iterator instead of a list?

RB