The optparser and args arguments of the
parse() method are
utilized to enable cooperation between the configuation option parser and an
instance of the optparse.
When cooperation is enabled the options object created by the
method contains attributes for options from both the command line option
parser and the configuration file parser. If the destination attribute
name is the same for an option in both the command line and configuration
file option parsers, the parsers will cooperate with one another as
documented in "Option cooperation" (section 3.2).