import csv
file = open('demo.csv','w',encoding='utf8',newline='')
w = csv.writer(file)
w.writerow(['name','age','score','city'])
# w.writerow(['张三','20','100','上海'])
# w.writerow(['李四','22','100','武汉'])
# w.writerow(['王五','25','100','北京'])
w.writerows(
    [
        ['张三','20','100','上海'],
        ['李四','22','100','武汉'],
        ['王五','25','100','北京'],
    ]
)
file.close()

file = open('info.csv','r',encoding='utf8')
r = csv.reader(file)
for data in r:
    print(data)
file.close()

结果

[]
['姓名，年龄，性别，城市']
['张三，22，男，上海']
['李四，20，男，北京']
['王五，30，女，武汉']
['tony', '25', '女，南京']
['tom', '26，女，深圳']

Process finished with exit code 0