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python中把資料存入csv中

import csv

# 如果不新增newline=""的話,就會每條資料中間都會有空格行
with open("test.csv","w", newline="") as csvfile: 
    # 初始化寫入物件
    writer = csv.writer(csvfile)

    #先寫入columns_name
    #writer.writerow(["index","a_name","b_name"])
    #寫入多行用writerows
    writer.writerows([[0,1,2],[1,2,3],[2,3,4]])

得到結果: