python csv文件读写 脚本

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)
f_csv.writerow(headers)
f_csv.writerows(rows)

import csv

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

rows = [
{'class':1,'name':'xiaoming','sex':'male','height':168,'year':23},
{'class':1,'name':'xiaohong','sex':'female','height':162,'year':22},
{'class':2,'name':'xiaozhang','sex':'female','height':163,'year':21},
{'class':2,'name':'xiaoli','sex':'male','height':158,'year':21},
]

with open('test2.csv','w',newline='')as f:
f_csv = csv.DictWriter(f,headers)
f_csv.writeheader()
f_csv.writerows(rows)

读
import csv
with open('test.csv')as f:
f_csv = csv.reader(f)
for row in f_csv:
print(row)