import csv

 with open('test.csv','w',newline='')as fp:

     test_writer=csv.writer(fp,delimiter=' ',quotechar='"')   #创建writer对象

     test_writer.writerow(['red','blue','green'])  #写入一行内容

     test_writer.writerow(['test_string']*5)

 with open('test.csv',newline='')as fp:

     test_reader=csv.reader(fp,delimiter=' ',quotechar='"')  #创建reader对象

     for row in test_reader: #遍历所有行

         print(row)  #每行作为一个列表返回

         # ['red', 'blue', 'green']

         # ['test_string', 'test_string', 'test_string', 'test_string', 'test_string']

 with open('test.csv',newline='')as fp:

     test_reader=csv.reader(fp,delimiter=':',quotechar='"')  #使用不同的分隔符

     for row in test_reader:

         print(row)  #与上面的输出不同

         # ['red blue green']

         # ['test_string test_string test_string test_string test_string']

 with open('test.csv',newline='')as fp:

     test_reader=csv.reader(fp,delimiter=' ',quotechar='"')

     for row in test_reader:

         print(','.join(row))    #重新组织数据形式

         # red, blue, green

         # test_string, test_string, test_string, test_string, test_string

 with open('name.csv','w')as fp:

     headers=['姓氏','名字']

     test_dictWrite=csv.DictWriter(fp,fieldnames=headers)    #创建DictWriter对象

     test_dictWrite.writeheader()    #写入表头信息

     test_dictWrite.writerow({'姓氏':'张','名字':'山'})    #写入数据

     test_dictWrite.writerow({'姓氏':'刘','名字':'蛤蟆'})

     test_dictWrite.writerow({'姓氏': '赖', '名字': '天鹅'})

 with open('name.csv')as fp:

     test_dictReader=csv.DictReader(fp)  #创建DictReader对象

     print(','.join(test_dictReader.fieldnames)) #读取表头信息

     for row in test_dictReader:

         print(row['姓氏'],',',row['名字'])

 # 姓氏,名字

 # 张 , 山

 # 刘 , 蛤蟆

 # 赖 , 天鹅