transmutation of `getopt`/`argparse`
Single file Python scripts is likely to be a use-case which will be mostly functional soon/first, but they usually use `argparse`.   Luckily there is usually a similar library in most languages that we can convert the Python into.  `getopt` is likely to be easier to get working in all languages, and it is worth doing for that reason alone, however it is less used in real Python code this days.  But it Python authors might be willing to downgrade their `argparse` code into `getopt` if it means they can transpile to a larger number of languages.