[Tutor] collecting certain data from a textfile
Hi!
I got this simple but effective piece of code. It picks certain wanted
pieces of data from a textfile based on database records and puts all of
them them in a new textfile in certain order. I was wondering, could it be
possible to make it otherwise in case that there's much more rows in that
textfile and/or there's much more bits of data to collect?
data = open('data.txt','r')
f1 = data.readlines()
data.close()
f2 = open('data.txt','r')
i=0
f3 = []
while i len(f1):
a=f2.readline()
b=f2.readline()
c=f2.readline()
data2 = (
a[1:38].strip()+';'+
a[54:88].strip()+';'+
b[77:96].strip()+';'+
b[1:16].strip()+';'+
c[23:33].strip()+';'+
c[123:133].strip()+';'
)
wanted = (data2)
f3.append(wanted + \n)
i += 3
f4 = open('wanted.txt', 'w')
f4.write(''.join(f3))
f2.close()
f4.close()
Thanks! OV
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[Tutor] handling a textfile continued
Hi! Sorry. OK I admit I might have been confusing. Although I got some good ideas from the messages. Thanks. Let me try again: So I got this big textfile. It's full of data from a database. About 200 or more rows or lines in a textfile. There's three first rows that belong to the same subject. And then next three rows belong to another subject and so on, to the end of the file. What I need to do, is put the three rows that goes together and belong to certain subject, on a one single line in the output textfile. And that goes with the rest of the data to the end of the new file. Thanks. OV ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
[Tutor] handling a textfile
Hi! 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... etc. Thanks! OV ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
