Re: Reading from text
Aahz wrote: In article mailman.140.1234896250.11746.python-l...@python.org, Tim Chase python.l...@tim.thechases.com wrote: Assuming this is a real task and not a homework problem, then I'd do it this way: $ cd [directory containing 50 test files] $ (for file in *; do head -n11 $file | tail -n5; done) /path/to/results-file.txt I'd use sed: sed -ns 7,11p /source/path/*.txt /path/to/results.txt hard to get much more concise than that with any common tool :) But you do have to learn sed. Avoiding that is precisely why I stick with Python. +1 [cross-platform] QOTW -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ Want to know? Come to PyCon - soon! http://us.pycon.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
In article mailman.140.1234896250.11746.python-l...@python.org, Tim Chase python.l...@tim.thechases.com wrote: Assuming this is a real task and not a homework problem, then I'd do it this way: $ cd [directory containing 50 test files] $ (for file in *; do head -n11 $file | tail -n5; done) /path/to/results-file.txt I'd use sed: sed -ns 7,11p /source/path/*.txt /path/to/results.txt hard to get much more concise than that with any common tool :) But you do have to learn sed. Avoiding that is precisely why I stick with Python. -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ All problems in computer science can be solved by another level of indirection. --Butler Lampson -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
On Feb 17, 11:03 am, oamram oam...@gmail.com wrote:
Hi All,
new to python. i have a directory with about 50 text file and i need to
iterate through them and get
line 7 to 11 from each file and write those lines into another file(one file
that will contain all lines).
import glob
file(output.txt,w).write('\n'.join( .join(f.readlines()
[7:11+1]) ) for f in glob.glob(targetdir/*.txt))
-- Paul
--
http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
oamram a écrit : Hi All, new to python. i have a directory with about 50 text file and i need to iterate through them and get line 7 to 11 from each file and write those lines into another file(one file that will contain all lines). First create a function that read and parse one file Then create a loop that call this function for each file in a directory Modules to read : http://www.python.org/doc/2.5.2/tut/node9.html#SECTION00921 http://docs.python.org/library/os.html Julien -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
oamram: i have a directory with about 50 text file and i need to iterate through them and get line 7 to 11 from each file and write those lines into another file(one file that will contain all lines). Files can be iterated line-by-line, so this idiom: for line in file: ... will give you the lines, with newline. Once you have debugged that, you can use the standard module glob (http://docs.python.org/library/ glob.html#module-glob ) to iterate on files. If you have more problems, show use the code you have written and we may suggest improvements. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
bearophileh...@lycos.com wrote: oamram: i have a directory with about 50 text file and i need to iterate through them and get line 7 to 11 from each file and write those lines into another file(one file that will contain all lines). Files can be iterated line-by-line, so this idiom: for line in file: ... will give you the lines, with newline. Once you have debugged that, you can use the standard module glob (http://docs.python.org/library/ glob.html#module-glob ) to iterate on files. [snip] Or: for index, line in enumerate(my_file): ... where index will give you the line number (starting from 0, so you'll want lines 6 to 10). You can break out of the loop when you have all the lines you want. If you have more problems, show use the code you have written and we may suggest improvements. -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
On 2009-02-17, oamram oam...@gmail.com wrote: i have a directory with about 50 text file and i need to iterate through them and get line 7 to 11 from each file and write those lines into another file(one file that will contain all lines). Assuming this is a real task and not a homework problem, then I'd do it this way: $ cd [directory containing 50 test files] $ (for file in *; do head -n11 $file | tail -n5; done) /path/to/results-file.txt -- Grant Edwards grante Yow! ... My pants just went at on a wild rampage through a visi.comLong Island Bowling Alley!! -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
Assuming this is a real task and not a homework problem, then I'd do it this way: $ cd [directory containing 50 test files] $ (for file in *; do head -n11 $file | tail -n5; done) /path/to/results-file.txt I'd use sed: sed -ns 7,11p /source/path/*.txt /path/to/results.txt hard to get much more concise than that with any common tool :) -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text
On 2009-02-17, Tim Chase python.l...@tim.thechases.com wrote: Assuming this is a real task and not a homework problem, then I'd do it this way: $ cd [directory containing 50 test files] $ (for file in *; do head -n11 $file | tail -n5; done) /path/to/results-file.txt I'd use sed: sed -ns 7,11p /source/path/*.txt /path/to/results.txt Well done. -- Grant Edwards grante Yow! does your DRESSING at ROOM have enough ASPARAGUS? visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Reading from text file
A. Joseph wrote: I want to read from text file, 25 lines each time i press enter key, just like the python documentation. you can use pydoc's pager from your program: import pydoc text = open(filename).read() pydoc.pager(text) /F -- http://mail.python.org/mailman/listinfo/python-list
