prog13_3.py

import csv

players = [
    ("A01", "山口　明菜", 152, 51.3),
    ("A02", "川上　レオ", 176, 65.7),
    ("A03", "水田　優希", 182, 81.4),
]

with open("players.csv", "w", encoding="utf-8", newline="") as file_obj:
    writer_obj = csv.writer(file_obj)
    for athlete_info in players:
        writer_obj.writerow(athlete_info)

# プログラム13-3（CSVファイルの出力 ①）