Fix incompatibility with older argparse
With older argparse (circa 2.7.4 vintage), using set_defaults
to set a function on the main parser prevents it from ever
calling the functions set on the sub-parser.
We registered this default function so that we could get help
usage with argparse on python 3.x, since it doesn't print
error by default if no sub-parser command is given (but 2.x
does).
To workaround this, we instead check for 'func' attribute
existing on the parsed args. This is a no-op for python 2.x
since it already printed a usage message by default.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
1 file changed
