Brett Cannon added the comment:
To paraphrase Michael, he wants a way to tell argparse that an argument has to
be supplied either from the command-line or some other mechanism (e.g., envvar,
config file, etc.), but that if the value cannot be found in either situation,
argparse fails saying th
New submission from Michael Herold:
argparse has at least three features to set defaults (default=, set_defaults(),
argument_default=). However, there is no feature to set the values of
arguments.
The difference is, that a required argument has to be specified, also if a
default value exists
