Python distutils.core 模块，gen_usage() 实例源码

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def handle_display_options(self, option_order):
        """If there were any non-global "display-only" options
        (--help-commands or the metadata display options) on the command
        line, display the requested info and return true; else return
        false.
        """
        from distutils.core import gen_usage

        # User just wants a list of commands -- we'll print it out and stop
        # processing now (ie. if they ran "setup --help-commands foo bar",
        # we ignore "foo bar").
        if self.help_commands:
            self.print_commands()
            print('')
            print(gen_usage(self.script_name))
            return 1

        # If user supplied any of the "display metadata" options, then
        # display that metadata in the order in which the user supplied the
        # metadata options.
        any_display_options = 0
        is_display_option = {}
        for option in self.display_options:
            is_display_option[option[0]] = 1

        for (opt, val) in option_order:
            if val and is_display_option.get(opt):
                opt = translate_longopt(opt)
                value = getattr(self.metadata, "get_"+opt)()
                if opt in ['keywords', 'platforms']:
                    print(','.join(value))
                elif opt in ('classifiers', 'provides', 'requires',
                             'obsoletes'):
                    print('\n'.join(value))
                else:
                    print(value)
                any_display_options = 1

        return any_display_options

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))

def _show_help(self, parser, global_options=1, display_options=1,
                   commands=[]):
        """Show help for the setup script command-line in the form of
        several lists of command-line options.  'parser' should be a
        FancyGetopt instance; do not expect it to be returned in the
        same state, as its option table will be reset to make it
        generate the correct help text.

        If 'global_options' is true, lists the global options:
        --verbose, --dry-run, etc.  If 'display_options' is true, lists
        the "display-only" options: --name, --version, etc.  Finally,
        lists per-command help for every command name or command class
        in 'commands'.
        """
        # late import because of mutual dependence between these modules
        from distutils.core import gen_usage
        from distutils.cmd import Command

        if global_options:
            if display_options:
                options = self._get_toplevel_options()
            else:
                options = self.global_options
            parser.set_option_table(options)
            parser.print_help(self.common_usage + "\nGlobal options:")
            print('')

        if display_options:
            parser.set_option_table(self.display_options)
            parser.print_help(
                "Information display options (just display " +
                "information, ignore any commands)")
            print('')

        for command in self.commands:
            if isinstance(command, type) and issubclass(command, Command):
                klass = command
            else:
                klass = self.get_command_class(command)
            if (hasattr(klass, 'help_options') and
                isinstance(klass.help_options, list)):
                parser.set_option_table(klass.user_options +
                                        fix_help_options(klass.help_options))
            else:
                parser.set_option_table(klass.user_options)
            parser.print_help("Options for '%s' command:" % klass.__name__)
            print('')

        print(gen_usage(self.script_name))