On Saturday, July 21, 2012 6:57:48 AM UTC-7, Roy Smith wrote: > In article <mailman.2380.1342873263.4697.python-l...@python.org>, > Peter Otten <__pete...@web.de> wrote: > > > subprocess.Popen([ > > "C:\\Program Files (x86)\\Java\\jdk1.7.0_05\\bin\\java.exe", > > "-cp", > > "C:\\antlr\\antlr-3.4-complete.jar", > > "org.antlr.Tool", > > "C:\\Users\\Jason\\Documents\\antlr\\java grammar\\Java.g"], > > stdout=subprocess.PIPE).communicate() > > You might also want to try raw strings. This should be identical to > Peter's version, but easier to read: > > subprocess.Popen([ > r"C:\Program Files (x86)\Java\jdk1.7.0_05\bin\java.exe", > r"-cp", > r"C:\antlr\antlr-3.4-complete.jar", > r"org.antlr.Tool", > r"C:\Users\Jason\Documents\antlr\java grammar\Java.g"], > stdout=subprocess.PIPE).communicate() > > although I would probably refactor it like: > > args = [r"C:\Program Files (x86)\Java\jdk1.7.0_05\bin\java.exe", > r"-cp", > r"C:\antlr\antlr-3.4-complete.jar", > r"org.antlr.Tool", > r"C:\Users\Jason\Documents\antlr\java grammar\Java.g", > ] > proc = subprocess.Popen(args, stdout=subprocess.PIPE) > proc.communicate()
The r string notation at least saves having to double type a bunch of backslashes, although the appearance prepended to the string takes a little getting used to. Visually the separate array to handle arguments is perhaps cleaner, having more resemblance to the original command. Thanks for the tips. -- http://mail.python.org/mailman/listinfo/python-list
