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Fix Python 3.6 argparse compatibility #3

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Merged
bradthx merged 1 commit into from
Apr 26, 2026
Merged

Fix Python 3.6 argparse compatibility #3

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7 changes: 4 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -127,9 +127,10 @@ If scan_updates_baseline is true, ndrift updates baseline after each scan.
### Requirements

1. Linux
2. Python 3
3. optional: lsattr for filesystem attribute checks
4. optional: AWS CLI for object storage report upload
2. Python 3.6 or newer
3. for Python 3.6 only: dataclasses backport package
4. optional: lsattr for filesystem attribute checks
5. optional: AWS CLI for object storage report upload

### Local install in project directory

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6 changes: 5 additions & 1 deletion ndrift
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Expand Up @@ -1268,7 +1268,8 @@ def build_parser() -> argparse.ArgumentParser:
prog="ndrift",
description="Lightweight file integrity monitor for Linux",
)
sub = parser.add_subparsers(dest="command", required=True)
sub = parser.add_subparsers(dest="command")
sub.required = True

init_cmd = sub.add_parser("init", help="create baseline")
init_cmd.add_argument("directories", nargs="+", help="directories to monitor")
Expand Down Expand Up @@ -1338,6 +1339,9 @@ def main(argv: Optional[List[str]] = None) -> int:
"""Main entry point for CLI execution."""
parser = build_parser()
args = parser.parse_args(argv)
if getattr(args, "command", None) is None:
parser.print_help(sys.stderr)
return EXIT_ERROR
try:
return dispatch(args)
except NdriftError as exc:
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