Whereas argparse is concerned with taking a bunch of command line arguments and parsing them, this package is intended to do the opposite; that is, it'll take the parsed arguments and create the effective command line invocation of the script that generated them. The motivation is to be able to tell users exactly what was used for all of the options, taking into consideration any defaults and other transformations that might've been applied in the midst of parsing, such that users are able to reproduce a prior run of a script exactly.