| optparse-package | Command line option parser |
| add_option | Functions to enable our OptionParser to recognize specific command line options. |
| IndentedHelpFormatter | Builtin help text formatters |
| make_option | Functions to enable our OptionParser to recognize specific command line options. |
| OptionParser | A function to create an instance of a parser object |
| OptionParser-class | Option Parser |
| OptionParserOption | Class to hold information about command-line options |
| OptionParserOption-class | Class to hold information about command-line options |
| optparse | Command line option parser |
| parse_args | Parse command line options. |
| parse_args2 | Parse command line options. |
| print_help | Printing an usage message from an OptionParser object |
| TitledHelpFormatter | Builtin help text formatters |