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Implementing sub-commands in Python with argparse

Long chains of easier-to-read sub-commands have come to be all the rage these days, or maybe it’s just me. To fit into contemporary parlance, I feel like most programs historically used prefixes for sub-commands like -, like find’s -exec. These days, calling an application with docker volume ls or kubectl get all --all-namespaces is an everyday thing. Nowadays sed -i would be written like sed inplace.

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