我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用tornado.options.options.print_help()。
def print_help(self, file=None): """Prints all the command line options to stderr (or another file).""" if file is None: file = sys.stderr print("Usage: %s [OPTIONS]" % sys.argv[0], file=file) print("\nOptions:\n", file=file) by_group = {} for option in self._options.values(): by_group.setdefault(option.group_name, []).append(option) for filename, o in sorted(by_group.items()): if filename: print("\n%s options:\n" % os.path.normpath(filename), file=file) o.sort(key=lambda option: option.name) for option in o: # Always print names with dashes in a CLI context. prefix = self._normalize_name(option.name) if option.metavar: prefix += "=" + option.metavar description = option.help or "" if option.default is not None and option.default != '': description += " (default %s)" % option.default lines = textwrap.wrap(description, 79 - 35) if len(prefix) > 30 or len(lines) == 0: lines.insert(0, '') print(" --%-30s %s" % (prefix, lines[0]), file=file) for line in lines[1:]: print("%-34s %s" % (' ', line), file=file) print(file=file)
def _help_callback(self, value): if value: self.print_help() sys.exit(0)
def print_help(file=None): """Prints all the command line options to stderr (or another file). See `OptionParser.print_help`. """ return options.print_help(file)
def print_help(self, file=None): """Prints all the command line options to stderr (or another file).""" if file is None: file = sys.stderr print("Usage: %s [OPTIONS]" % sys.argv[0], file=file) print("\nOptions:\n", file=file) by_group = {} for option in self._options.values(): by_group.setdefault(option.group_name, []).append(option) for filename, o in sorted(by_group.items()): if filename: print("\n%s options:\n" % os.path.normpath(filename), file=file) o.sort(key=lambda option: option.name) for option in o: prefix = option.name if option.metavar: prefix += "=" + option.metavar description = option.help or "" if option.default is not None and option.default != '': description += " (default %s)" % option.default lines = textwrap.wrap(description, 79 - 35) if len(prefix) > 30 or len(lines) == 0: lines.insert(0, '') print(" --%-30s %s" % (prefix, lines[0]), file=file) for line in lines[1:]: print("%-34s %s" % (' ', line), file=file) print(file=file)
def parse_command_line(self, args=None, final=True): """Parses all options given on the command line (defaults to `sys.argv`). Note that ``args[0]`` is ignored since it is the program name in `sys.argv`. We return a list of all arguments that are not parsed as options. If ``final`` is ``False``, parse callbacks will not be run. This is useful for applications that wish to combine configurations from multiple sources. """ if args is None: args = sys.argv remaining = [] for i in range(1, len(args)): # All things after the last option are command line arguments if not args[i].startswith("-"): remaining = args[i:] break if args[i] == "--": remaining = args[i + 1:] break arg = args[i].lstrip("-") name, equals, value = arg.partition("=") name = self._normalize_name(name) if name not in self._options: self.print_help() raise Error('Unrecognized command line option: %r' % name) option = self._options[name] if not equals: if option.type == bool: value = "true" else: raise Error('Option %r requires a value' % name) option.parse(value) if final: self.run_parse_callbacks() return remaining
