6.21.2.1 Understanding option actions

Actions tell optparse what to do when it encounters an option on the command line. There is a fixed set of actions hard-coded into optparse; adding new actions is an advanced topic covered in section , Extending optparse. Most actions tell optparse to store a value in some variable--for example, take a string from the command line and store it in an attribute of options.

If you don't specify an option action, optparse defaults to store.

See About this document... for information on suggesting changes.