[Tutor] problem loading and array from an external file

[Bill Allen]

On Tue, Aug 10, 2010 at 11:11 AM, Hugo Arts <hugo.yoshi at gmail.com> wrote:
> On Tue, Aug 10, 2010 at 9:59 AM, bob gailer <bgailer at gmail.com> wrote:
>> On 8/10/2010 10:42 AM, Bill Allen wrote:
>>>
>>> Bob,
>>>
>>> I was really off on that algorithm and had way over complicated it.
>>> I have it working correctly now, but for the sake of those who saw my
>>> earlier really botched code, here is the resultant code that works.
>>> The entire inner loop and intermediate variables are removed, but
>>> shown commented out.  I had somehow thought I needed to read each
>>> member of each subarray in individually.  That was not the case and
>>> that inner loop was overwriting the array.
>>>
>>> # reads one line at a time from file and puts data into array
>>>     for line in textf:
>>>         #tempwords = line.split(None)
>>>         #for n in range(0, len(room)-1):
>>>         #    roomx[n] = tempwords[n]
>>>         #room[m] = roomx
>>>         room[m] = line.split(None)
>>>         m += 1
>>>
>>>
>>
>> Great. Good work. Teach a man to fish?
>>
>> Now for the refinements. First you can use enumerate to obtain the room
>> index:
>>
>>    for m, line in enumerate(textf):
>>        room[m] = line.split(None)
>>
>>
>> Second you can start with an empty list and append:
>>
>>    rooms = []
>>    for line in textf:
>>        rooms.append(line.split(None))
>>
>> Third you can use list comprehension:
>>
>>    rooms = [line.split(None) for line in textf]
>>
>
> Nice going, this is the best way of getting your answer from the
> tutors list IMO, high fives all around. I wish more threads went like
> this.
>
> You don't actually have to specify the None in line.split AFAIK, but
> it might be better to be explicit. thoughts on this, anyone?
>
> Hugo
>

Hugo,

I had wondered about the use of None in that context.  I had seen it
used that way in some examples and just followed suit.  Just do
line.split() ?

Bill