"Olli Virta" <llvi...@gmail.com> wrote
I have a textfile (job.txt) that needs modifying. The structure of this
file
is like this:
AAA1...
BBB1...
CCC1...
AAA2...
BBB2...
CCC2...
etc...
Question is how can I turn this all to a textfile (done.txt) that is
suppose
to look like this:
AAA1...BBB1...CCC1...
AAA2...BBB2...CCC2...
Lots of ways to do it. The simplest is to read the variables line by line,
so, in pseudo code:
while infile not empty
a = f.readline()
b = f.readline()
c = f.readline()
outfile.write("%s,%s,%s" % (a,b,c) )
If the data is manageable you could read it all into a list then use list
slicing to achieve the same
data = infile.readlines()
for start in range(len(data))[::3]: # get every third index
outfile.write("%s\t%s\t%s" % tuple(data[start :start+3]) )
I suspect you can do even clever things with itertools using groupby
and such, but I'm no itertools expert - its on my list of things to
learn... :-)
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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