On Jun 11, 7:17 am, smitty1e <[EMAIL PROTECTED]> wrote: > The first print statement does what you'd expect. > The second print statement has rather a lot of rat in it. > The goal here is to write a function that will return the man page for > some command (mktemp used as a short example here) as text to client > code, where the groff markup will be chopped to extract all of the > command options. Those options will eventually be used within an > emacs mode, all things going swimmingly. > I don't know what's going on with the piping in the second version. > It looks like the output of p0 gets converted to unicode at some > point,
Whatever gave you that idea? > but I might be misunderstanding what's going on. The 4.8 > codecs module documentation doesn't really offer much enlightment, > nor google. About the only other place I can think to look would be > the unit test cases shipped with python. Get your head out of the red herring factory; unicode, "utf" (which one?) and codecs have nothing to do with your problem. Think about looking at your own code and at the bzip2 documentation. > Sort of hoping one of the guru-level pythonistas can point to > illumination, or write something to help out the next chap. This > might be one of those catalytic questions, the answer to which tackles > five other questions you didn't really know you had. > Thanks, > Chris > --------------------------- > #!/usr/bin/python > import subprocess > > p = subprocess.Popen(["bzip2", "-c", "-d", "/usr/share/man/man1/mktemp. > 1.bz2"] > , stdout=subprocess.PIPE) > stdout, stderr = p.communicate() > print stdout > > p0 = subprocess.Popen(["cat","/usr/share/man/man1/mktemp.1.bz2"], > stdout=subprocess.PIPE) > p1 = subprocess.Popen(["bzip2"], stdin=p0.stdout , > stdout=subprocess.PIPE) > stdout, stderr = p1.communicate() > print stdout > --------------------------- You left out the command-line options for bzip2. The "rat" that you saw was the result of compressing the already-compressed man page. Read this: http://www.bzip.org/docs.html which is a bit obscure. The --help output from my copy of an antique (2001, v1.02) bzip2 Windows port explains it plainly: """ If invoked as `bzip2', default action is to compress. as `bunzip2', default action is to decompress. as `bzcat', default action is to decompress to stdout. If no file names are given, bzip2 compresses or decompresses from standard input to standard output. """ HTH, John -- http://mail.python.org/mailman/listinfo/python-list
