Announcing argparse 0.4 ----------------------- argparse home: http://argparse.python-hosting.com/
argparse single module download: http://argparse.python-hosting.com/file/trunk/argparse.py?format=raw argparse bundled downloads at PyPI: http://www.python.org/pypi/argparse/ New in this release =================== * The add_argument method now allows a positional argument with nargs='*' to specify a default value:: >>> parser = argparse.ArgumentParser() >>> parser.add_argument('foo', nargs='*', default=['def']) >>> parser.parse_args('1 2 3'.split()) Namespace(foo=['1', '2', '3']) >>> parser.parse_args([]) Namespace(foo=['def']) About argparse ============== The argparse module is an optparse-inspired command line parser that improves on optparse by: * handling both optional and positional arguments * supporting parsers that dispatch to sub-parsers * producing more informative usage messages * supporting actions that consume any number of command-line args * allowing types and actions to be specified with simple callables instead of hacking class attributes like STORE_ACTIONS or CHECK_METHODS as well as including a number of other more minor improvements on the optparse API. To whet your appetite, here's a simple program that sums its command-line arguments and writes them to a file:: parser = argparse.ArgumentParser() parser.add_argument('integers', type=int, nargs='+') parser.add_argument('--log', type='outfile', default=sys.stdout) args = parser.parse_args() args.log.write('%s\n' % sum(args.integers)) args.log.close() -- http://mail.python.org/mailman/listinfo/python-list
