[PYTHON MATRIX-SIG] Reading text files
Tue, 11 Mar 97 12:34:38 -0600
Alan Watson wrote:
> I'm not going to touch text files, but if someone else wants to they
> are welcome to join in.
It has been my dream to be able to emulate the following FORTRAN idiom
(sorry, I don't remember the syntax very well) in Python.
READ (FILE,"F4.8, F4.8") A(I), B(I), I=1,100
It would be nice if the fortran formatting codes could be used verbatim. I
imagine the call would be something like...
readFortran(file, "F4.8, F4.8", A[0:100], B[0:100])
A and B would need to be preallocated. If the format was left out one could
revert to the fortran "*" format, taking types from the arrays. I like using
sub-arrays because then one can do things like:
I = zeros(100,'i')
A = zeros((3,100),'f')
readFortran(file, I, A, A, A)
Of course, there are many issues I haven't though about. One would also want
to be able to write these files. More importantly, it would be nice to be
able to work with FORTRAN binary files which have cryptic block-header stuff
attached. Perhaps those should have their own file class.
I've considered attacking this, but the task seemed to daunting. Would the
easiest way be to use the fortran library directly? This would require people
to get f2c who don't have fortran, but I imagine code would have to be stolen
from there anyway, and it could run faster if you had an optimized fortran
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