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feat: add --version/-v flag and validate --root-dir exists in CLI - #389

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feat: add --version/-v flag and validate --root-dir exists in CLI#389
pro-laxmi wants to merge 1 commit into
python-distro:masterfrom
pro-laxmi:feat/cli-version-and-rootdir-validation

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@pro-laxmi pro-laxmi commented Nov 12, 2026

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Summary of Changes

  1. Added --version / -v flag to the distro CLI, printing %(prog)s <version> and exiting cleanly.
  2. Added directory validation for --root-dir: if a user supplies a non-existent path or non-directory, argparse now issues a clean error (parser.error) instead of silently returning empty/None distribution metadata.

Verification & Testing

python3 -m distro --version
# Output: python3 -m distro 1.9.0

python3 -m distro --root-dir /nonexistent_path
# Output: python3 -m distro: error: Root directory '/nonexistent_path' does not exist or is not a directory

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