test_parquet.py

import logging
import os
import re

import pyarrow.parquet as pq
import pandas as p
import glob

if __name__ == '__main__':
    files = glob.glob("temp/*.parquet")
    total = 0
    for f in files:
        tbl = pq.read_table(f, columns=[])  # lê só o metadata
        total += tbl.num_rows
    print("num_examples =", total)

    size_bytes = sum(os.path.getsize(f) for f in files)
    print("dataset_size =", size_bytes)