On Saturday, February 1, 2014 6:54:09 AM UTC-6, Peter Otten wrote: > Rick Dooling wrote: > > > > > I spent half a day trying to convert this bash script (on Mac) > > > > > > textutil -convert html $1 -stdout | pandoc -f html -t markdown -o $2 > > > > > > into Python using subprocess pipes. > > > > > > It works if I save the above into a shell script called convert.sh and > > > then do > > > > > > subprocess.check_call(["convert.sh", file, markdown_file]) > > > > > > where file and markdown_file are variables. > > > > > > But otherwise my piping attempts fail. > > > > It is always a good idea to post your "best effort" failed attempt, if only > > to give us an idea of your level of expertise. > > > > > Could someone show me how to pipe in subprocess. Yes, I've read the doc, > > > especially > > > > > > http://docs.python.org/2/library/subprocess.html#replacing-shell-pipeline > > > > > > But I'm a feeble hobbyist, not a computer scientist. > > > > Try to convert the example from the above page > > > > """ > > output=`dmesg | grep hda` > > # becomes > > p1 = Popen(["dmesg"], stdout=PIPE) > > p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE) > > p1.stdout.close() # Allow p1 to receive a SIGPIPE if p2 exits. > > output = p2.communicate()[0] > > """ > > > > to your usecase. Namely, replace > > > > ["dmesg"] --> ["textutil", "-convert", "html", infile, "-stdout"] > > ["grep", "hda"] --> ["pandoc", "-f", "html", "-t", "marktown", "-o", > > outfile] > > > > Don't forget to set > > > > infile = ... > > outfile = ... > > > > to filenames (with absolute paths, to avoid one source of error). > > If that doesn't work post the code you wrote along with the error messages.
p1 = subprocess.Popen(["textutil", "-convert", "html", file], stdout=subprocess.PIPE) p2 = subprocess.check_call(["pandoc", "-f", "html", "-t", "markdown", "-o", markdown_file], stdin=p1.stdout, stdout=subprocess.PIPE) p1.stdout.close() # Allow p1 to receive a SIGPIPE if p2 exits. output = p2.communicate()[0] Errors Traceback (most recent call last): File "/Users/me/Python/any2pandoc.py", line 70, in <module> convert_word_file(file, markdown_file) File "/Users/me/Python/any2pandoc.py", line 59, in convert_word_file output = p2.communicate()[0] AttributeError: 'int' object has no attribute 'communicate' I get a markdown_file created but it's empty. Thanks, RD ps - Daniel's works fine but I still don't learn to pipe :) -- https://mail.python.org/mailman/listinfo/python-list