[ 源代码： python-plac ]
软件包：python3-plac（1.4.3-2）
Smartest command line arguments parser in the world
Technically plac is just a simple wrapper over argparse which hides most of its complexity by using a declarative interface: the argument parser is inferred rather than written down imperatively.
plac is targetting especially unsophisticated users, programmers, sys-admins, scientists and in general people writing throw-away scripts for themselves, choosing the command-line is surprisingly scalable upwards, even without using the underlying argparse.