python csv单行多行写入

import csv

headers = ['class','name','sex','height','year']

rows = [
        [1,'xiaoming','male',168,23],
        [1,'xiaohong','female',162,22],
        [2,'xiaozhang','female',163,21],
        [2,'xiaoli','male',158,21]
    ]

with open('test.csv','w')as f:
    f_csv = csv.writer(f)
    #单行写入
    f_csv.writerow(headers)
    #多行写入
    f_csv.writerows(rows)