On Jan 24, 3:17 pm, Donn Ingle <[EMAIL PROTECTED]> wrote: > Hi, > (Gnu/Linux - Python 2.4/5) > Given these two examples: > 1. > ./fui.py *.py > 2. > ls *.py | ./fui.py > > How can I capture a list of the arguments? > I need to get all the strings (file or dir names) passed via the normal > command line and any that may come from a pipe. > > There is a third case: > 3. > ls *.jpg | ./fui.py *.png > Where I would be gathering strings from two places. > > I am trying to write a command-line friendly tool that can be used in > traditional gnu/linux ways, otherwise I'd skip the pipe stuff totally. > > I have tried: > 1. pipedIn = sys.stdin.readlines() > Works fine for example 2, but example 1 goes into a 'wait for input' mode > and that's no good. Is there a way to tell when no input is coming from a > pipe at all? > > 2. import fileinput > for line in fileinput.input(): > print (line) > But this opens each file and I don't want that. > > I have seen a lot of search results that don't quite answer this angle of > the question, so I'm trying on the list. > > \d
Try the fileinput module. What you describe above is pretty close to the unix 'standard' but not quite. if we substitute the lp command instead of ./fui, the command normally takes a list of files to act on as its arguments, and anything piped in goes to its stdin where it is processed if it has an argument of - fileinput works that way but you may have problems with your: ls *.jpg | ./fui.py *.png Which might better be expressed as: ./fui.py `ls *.jpg` *.png which would work for ls and a python program using the fileinput module. - Paddy. -- http://mail.python.org/mailman/listinfo/python-list
