chunk-dataset.py

import json
import os
import shutil

def file_exists(file_path):
    return os.path.isfile(file_path)

def read_jsonl(file_path):
    data = []
    with open(file_path, 'r') as f:
        for line in f:
            data.append(json.loads(line))
    return data

if __name__ == "__main__":
    count = 0
    chunk_nb = 0
    data = read_jsonl("./data/metadata.jsonl")
    os.mkdir("./data/" + f"chunk_{chunk_nb}/")
    print(len(data))
    for d in data:
        # check if file exist
        if not file_exists("./data/" + d.get("file_name")):
            print("File not found: " + d.get("file_name"))
            continue
        new_path = "./data/" + f"chunk_{chunk_nb}/" + d.get("file_name")
        shutil.copyfile("./data/" + d.get("file_name"), new_path)
        # update file name in JSONL recor
        d["file_name"] = f"./chunk_{chunk_nb}/" + d.get("file_name")
        count += 1
        if count >= 1000:
            chunk_nb += 1
            count = 0
            os.mkdir("./data/" + f"chunk_{chunk_nb}/")
        # write to new JSONL file
        with open("./data/metadata-chunked.jsonl", "a") as f:
            f.write(json.dumps(d) + "\n")
        # print(d.get("file_name"))
    print(len(data))
    print(count)