The :mod:`!argparse` module makes it easy to write user-friendly command-line interfaces. The program defines what arguments it requires, and :mod:`!argparse` will figure out how to parse those out of ...
The README of argparse mentions that copying and moving are forbidden (see also p-ranav/argparse#260). My first instinct is now to wrap argparser in a unique_ptr so it can be returned without copying.
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