chemfp heapsweep command-line options

The following comes from chemfp heapsweep --help:

usage: chemfp heapsweep [-h] [-t FLOAT] [--num-picks N] [--all-equal]
                        [--in CANDIDATES_FORMAT]
                        [--randomize | --no-randomize] [--seed N]
                        [--mmap | --no-mmap] [--neighbors FILENAME]
                        [--neighbors-format FILENAME] [--output FILENAME]
                        [--out OUTPUT_FORMAT] [--precision N]
                        [--save-picks FILENAME] [--save-picks-format FILENAME]
                        [--save-candidates FILENAME]
                        [--save-candidates-format FILENAME]
                        [--pick-time | --no-pick-time] [--no-date]
                        [--date STR] [--times] [--progress | --no-progress]

Select diverse fingerprints using the heapsweep algorithm

positional arguments:
  candidates            fingerprint file containing candidates (fingerprints
                        to pick from)

  -h, --help            show this help message and exit
  -t FLOAT, --threshold FLOAT
                        Maximum similarity (default: 1.0)
  --num-picks N, -n N   Number of picks (default: 'all')
  --all-equal           Continue picking past --num-picks if the pick score is
                        Format of the candidates file (default uses filename
                        extension, or 'fps')
  --randomize, --no-randomize
                        Use --randomize (the default) to shuffle the
                        candidates before starting heapsweep (default: True)
  --seed N              Specify the random number generator seed between 0 and
                        2**64-1, inclusive, or use -1 to have one picked at
                        random (default: -1)
  --mmap, --no-mmap     Don't use mmap to read uncompressed FPB files. May
                        give better performance on networked file systems, at
                        the expense of higher memory use. (default: True)
  --neighbors FILENAME  For each pick, includes the nearest neighbor and score
                        from FILENAME
  --neighbors-format FILENAME
                        Format of the neighbors file (default uses filename
                        extension, or 'fps')
  --output FILENAME, -o FILENAME
                        Write output to the named file instead of stdout.
  --out OUTPUT_FORMAT   Output format. Must be one of 'chemfp' (the default),
                        'csv', 'tsv', or 'excel-tab', with optional
  --precision N         Number of digits in Tanimoto score (default: based on
                        the fingerprint size)
  --save-picks FILENAME
                        Write picked fingerprints to the named file.
  --save-picks-format FILENAME
                        Specify the format for the picked fingerprints.
  --save-candidates FILENAME
                        Write remaining candidate fingerprints to the named
  --save-candidates-format FILENAME
                        Specify the format for the remaining candidate
  --pick-time, --no-pick-time
                        include the elapsed time for each pick (default:
  --no-date             Do not include the 'date' metadata in the output
  --date STR            An ISO 8601 date (like '2022-02-07T11:10:15') to use
                        for the 'date' metadata in the output header
  --times               Write timing information to stderr
  --progress, --no-progress
                        Show a progress bar (default: show unless the output
                        is a terminal)