Help for cdv.write_rows

def write_rows(pathlike: str, rows: list[list[str]]):
    """
    Write a list of rows: [id, k1, v1, ...] as a CDV file.
    """
    recs = {}
    for row in rows:
        if not row: continue
        entry_id = row[0]
        fields = {row[i]: row[i+1] for i in range(1, len(row)-1, 2)}
        recs[entry_id] = fields
    save_all(pathlike, recs)