import json
import csv
from pathlib import Path
import pandas as pd

def save_json_lines(records, path):
    p = Path(path)
    p.parent.mkdir(parents=True, exist_ok=True)
    with open(p, 'w', encoding='utf-8') as f:
        for r in records:
            f.write(json.dumps(r) + "\n")

def load_json_lines(path):
    with open(path, 'r', encoding='utf-8') as f:
        for line in f:
            if line.strip():
                yield json.loads(line)

def save_csv(df, path):
    p = Path(path)
    p.parent.mkdir(parents=True, exist_ok=True)
    df.to_csv(p, index=False)