Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #19015

Re: Problem while doing a cat on a tabbed file with pexpect

Show key headers only | View raw

On Sun, 15 Jan 2012 09:51:44 -0800 (PST), Saqib Ali
<saqib.ali.75@gmail.com> wrote:


>Now, clearly the file contains tabs. But when I cat it through expect,
>and collect cat's output, those tabs have been converted to spaces.
>But I need the tabs!
>
>Can anyone explain this phenomenon or suggest how I can fix it?

	My question is:

	WHY are you doing this?

	Based upon the problem discription, as given, the solution would
seem to be to just open the file IN Python -- whether you read the lines
and use split() by hand, or pass the open file to the csv module for
reading/parsing is up to you.

-=-=-=-=-=-=-
import csv
import os

TESTFILE = "Test.tsv"

#create data file
fout = open(TESTFILE, "w")
for ln in [  "abc",
            "defg",
            "hijA"  ]:
    fout.write("\t".join(list(ln)) + "\n")
fout.close()

#process tab-separated data
fin = open(TESTFILE, "rb")
rdr = csv.reader(fin, dialect="excel-tab")
for rw in rdr:
    print rw

fin.close()
del rdr
os.remove(TESTFILE)
-=-=-=-=-=-=-
['a', 'b', 'c']
['d', 'e', 'f', 'g']
['h', 'i', 'j', 'A']
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
        wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Problem while doing a cat on a tabbed file with pexpect Saqib Ali <saqib.ali.75@gmail.com> - 2012-01-15 09:51 -0800
  Re: Problem while doing a cat on a tabbed file with pexpect Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-01-15 14:24 -0500
    Re: Problem while doing a cat on a tabbed file with pexpect Saqib Ali <saqib.ali.75@gmail.com> - 2012-01-15 16:11 -0800
      Re: Problem while doing a cat on a tabbed file with pexpect Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-01-15 22:35 -0500
      Re: Problem while doing a cat on a tabbed file with pexpect Michael Torrie <torriem@gmail.com> - 2012-01-15 20:47 -0700
  Re: Problem while doing a cat on a tabbed file with pexpect Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-01-15 23:04 +0000
    Re: Problem while doing a cat on a tabbed file with pexpect Cameron Simpson <cs@zip.com.au> - 2012-01-16 10:40 +1100
      Re: Problem while doing a cat on a tabbed file with pexpect Saqib Ali <saqib.ali.75@gmail.com> - 2012-01-15 16:14 -0800
        Re: Problem while doing a cat on a tabbed file with pexpect Cameron Simpson <cs@zip.com.au> - 2012-01-16 12:45 +1100
  Re: Problem while doing a cat on a tabbed file with pexpect Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-01-16 02:01 +0000

csiph-web