getopt and GNU getopt -- Python is like classical UNIX getopt.
(\character{:}; i.e., the same format that \UNIX{}
\cfunction{getopt()} uses).
+\strong{Note:} Unlike GNU \cfunction{getopt()}, after a non-option
+argument, all further arguments are considered also non-options.
+This is similar to the way non-GNU \UNIX{} systems work.
+
\var{long_options}, if specified, must be a list of strings with the
names of the long options which should be supported. The leading
\code{'-}\code{-'} characters should not be included in the option