[Tutor] something relevant to array

[lina]

On Fri, Dec 23, 2011 at 6:42 PM, Alan Gauld <alan.gauld at btinternet.com> wrote:
> On 23/12/11 10:01, lina wrote:
>
>>         with open(filename,"r") as f:
>>             for line in f:
>>                 parts = f.readline().strip()
>
>
> Are you sure you want to do this?
> You are already reading a line from the file in the for loop.
> This will read the next line. So parts will comprise every second line in
> the file. Is that what you want?

No. that's why I am so confusing now. why the results so un-expected.
did not print the even line out (if the first line is odd line).

>
>
>
>>                 if len(parts) == 26:
>>                     dist = parts.split()[1]
>>                     print(dist)
>>                     result[i].append(dist)
>>     print(result)
>>
>> $ cat A_mindist_1.xvg
>> 4.640000e+05  3.169008e-01
>> 4.680000e+05  4.319328e-01
>> 4.720000e+05  5.126960e-01
>>
>>
>> $ cat A_mindist_2.xvg
>> 4.640000e+05  5.237660e-01
>> 4.680000e+05  2.352828e-01
>> 4.720000e+05  2.280239e-01
>>
>>
>> I wish
>> result[0]  =
>> 3.169008e-01
>> 4.319328e-01
>> 5.126960e-01
>>
>> result[1] =
>> 5.237660e-01
>> 2.352828e-01
>> 2.280239e-01
>
>
> This suggests you want each line so i'd expect your code to look more like
>
>
>         with open(filename,"r") as f:
>             for line in f:
>                 result[i].append(line.strip().split()[1])
>
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
>
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