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    <p>The best bet would be to write a patch to the optparse module. In the meantime, you can accomplish this with a slightly modified OptionParser class. This isn't perfect, but it'll get what you want done.</p> <pre><code>#!/usr/bin/env python from optparse import OptionParser, Option, IndentedHelpFormatter class PosOptionParser(OptionParser): def format_help(self, formatter=None): class Positional(object): def __init__(self, args): self.option_groups = [] self.option_list = args positional = Positional(self.positional) formatter = IndentedHelpFormatter() formatter.store_option_strings(positional) output = ['\n', formatter.format_heading("Positional Arguments")] formatter.indent() pos_help = [formatter.format_option(opt) for opt in self.positional] pos_help = [line.replace('--','') for line in pos_help] output += pos_help return OptionParser.format_help(self, formatter) + ''.join(output) def add_positional_argument(self, option): try: args = self.positional except AttributeError: args = [] args.append(option) self.positional = args def set_out(self, out): self.out = out def main(): usage = "usage: %prog [options] bar baz" parser = PosOptionParser(usage) parser.add_option('-f', '--foo', dest='foo', help='Enable foo') parser.add_positional_argument(Option('--bar', action='store_true', help='The bar positional argument')) parser.add_positional_argument(Option('--baz', action='store_true', help='The baz positional argument')) (options, args) = parser.parse_args() if len(args) != 2: parser.error("incorrect number of arguments") pass if __name__ == '__main__': main() </code></pre> <p>And the output you get from running this:</p> <pre><code>Usage: test.py [options] bar baz Options: -h, --help show this help message and exit -f FOO, --foo=FOO Enable foo Positional Arguments: bar The bar positional argument baz The baz positional argument </code></pre>
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    1. POHow do I format positional argument help using Python's optparse?
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    1. COThis was brilliant. A small question though: Could you detect if usage is set by the user or the default is used and if so add the positional args to the usage message?
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    2. COI suggest you look at the argparse module... It's small enough that you can embed it in any project, and does the same as this code and much more...
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