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Report number of batches in a spectrum dataset #60

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5 changes: 5 additions & 0 deletions depthcharge/data/spectrum_datasets.py
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

import copy
import logging
import math
import uuid
from collections.abc import Generator, Iterable
from os import PathLike
Expand Down Expand Up @@ -178,6 +179,10 @@ def __del__(self) -> None:
if self._tmpdir is not None:
self._tmpdir.cleanup()

def __len__(self) -> int:
"""The number of batches in the dataset."""
return math.ceil(self.n_spectra / self.batch_size)

@property
def n_spectra(self) -> int:
"""The number of spectra in the Lance dataset."""
Expand Down
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