On 04/10/2011 0.12, Tyler Glembo wrote:
Hi All,
So I have a ~3000 line fortran code that needs to be updated to run new files
by simply updating a few lines in the code (~10
lines). I thought python would be a great way to do so since I know a little
python but not fortran. So, my plan was to read in
each line, and then at a certain line number, write out the changed code. A
short snippet is as follows:
dest= open( f1, "w" )
source= open( f2, "r" )
for line in source:
if X:
dest.write( newline + "\n" )
else:
dest.write( line )
dest.close()
source.close()
The problem I am having is with hidden/invisible character. In the fortran
code, there are line indents which are denoted with an
invisible character ^I. When I write with python, there is no ^I at the
beginning of the line and the fortran code no longer
compiles. I know how to put in the invisible line return character (\n), but
how can I put in other invisible characters?
I think you could avoid entirely this problem by using the binary option in the
open function:
dest= open( f1, "wb" )
source= open( f2, "rb" )
This way, each read and each write you perform will take into account all kinds of characters, and so your written lines will be
identical to those you read. If the problem was only with the "newline" lines, then Steven's answer has already solved your problem.
Hope that helps
Francesco
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