[Tutor] how to read two files and substitute
Emile van Sebille
emile at fenx.com
Tue May 17 16:19:39 CEST 2011
On 5/17/2011 6:42 AM lina said...
> Hi,
>
> For file1:
>
> 5007 O28 CHO 173 35.300 99.430 65.810 1.00 0.0
> 5008 H29 CHO 173 35.680 100.290 66.150 1.00 0.00
> 5009 C1 CHO 174 59.060 12.440 58.680 1.00 0.00
> 5010 C2 CHO 174 59.460 12.480 60.160 1.00 0.00
> 5011 C3 CHO 174 59.590 11.120 60.830 1.00 0.00
> 5012 C4 CHO 174 60.780 10.430 60.160 1.00 0.00
>
> For file2:
>
> 5008 5010 5011
>
> I want to get the $4(column 4) value which has the $1 value. for
> values in file2
>
> such as the results is 173 174 174
>
> Thanks for any suggestions,
>
It'll help us help you if you show how far along you've come.
Otherwise, most of us will presume this is a homework assignment, and
we'd rather help you learn python than do your homework for you.
In short, you'll read the lines from the file, test each line to see if
it starts with one of the targets, then spilt the fields from the line
and select the fourth field. Accumulate those and return the result.
Post your code when you follow up please.
Emile
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