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author | Paul Eggleton <paul.eggleton@linux.intel.com> | 2015-12-22 17:02:54 +1300 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2015-12-28 09:25:12 +0000 |
commit | 8e0a84c90175cc2fedff0272abda073ee270b876 (patch) | |
tree | cc5e7a7778ffe12e0376cb7c06f1c1d69b79dfe9 /scripts/lib/argparse_oe.py | |
parent | 548d4332e827cc9ae13fd57517a42fa0f139880f (diff) | |
download | openembedded-core-contrib-8e0a84c90175cc2fedff0272abda073ee270b876.tar.gz |
scripts: print usage in argparse-using scripts when a command-line error occurs
For scripts that use Python's standard argparse module to parse
command-line arguments, create a subclass which will show the usage
the usage information when a command-line parsing error occurs. The most
common case would be when the script is run with no arguments; at least
then the user immediately gets to see what arguments they might need to
pass instead of just an error message.
(From OE-Core rev: d62fe7c9bc2df6a4464440a3cae0539074bf99aa)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'scripts/lib/argparse_oe.py')
-rw-r--r-- | scripts/lib/argparse_oe.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/scripts/lib/argparse_oe.py b/scripts/lib/argparse_oe.py new file mode 100644 index 0000000000..c2fee6de05 --- /dev/null +++ b/scripts/lib/argparse_oe.py @@ -0,0 +1,11 @@ +import sys +import argparse + +class ArgumentParser(argparse.ArgumentParser): + """Our own version of argparse's ArgumentParser""" + + def error(self, message): + sys.stderr.write('ERROR: %s\n' % message) + self.print_help() + sys.exit(2) + |