python 读取csv文件详解编程语言

import csv 
 
with open("test.csv","w",encoding='utf8') as csvfile: 
    writer=csv.writer(csvfile) 
    writer.writerow(["index","a_name","b_name"]) 
    writer.writerows([[0,'a1','b1'],[1,'a2','b2'],[2,'a3','b3']])

import csv 
 
with open("test.csv","w",encoding='utf8',newline='') as csvfile: 
    writer=csv.writer(csvfile) 
    writer.writerow(["index","a_name","b_name"]) 
    writer.writerows([[0,'a1','b1'],[1,'a2','b2'],[2,'a3','b3']])

import csv 
 
with open("test.csv","r") as csvfile: 
    reader=csv.reader(csvfile) 
    for line in reader: 
        print(line)