encoding: utf-8

import csv

def write_csv_demo1():
headers = ['username', 'age', 'height']
values = [
('張三', 18, 180),
('李四', 19, 190),
('王五', 20, 160)
]

with open('classroom.csv', 'w', encoding='utf-8', newline='') as fp:
    writer = csv.writer(fp)
    writer.writerow(headers)
    writer.writerows(values)

def write_csv_demo2():
headers = ['username', 'age', 'height']
values = [
{'username':'张三','age':18,'height':180},
{'username':'李四','age':19,'height':190},
{'username':'王五','age':20,'height':160}
]
with open('classroo1.csv','w',encoding='utf-8',newline='') as fp:
writer = csv.DictWriter(fp,headers)
# 写入表头数据的时候，需要调用writeheader方法
writer.writeheader()
writer.writerows(values)

if name == 'main':
write_csv_demo2()