1 import csv
 2 with open(‘test.csv‘,‘w‘,newline=‘‘)as fp:
 3     test_writer=csv.writer(fp,delimiter=‘ ‘,quotechar=‘"‘)   #创建writer对象
 4     test_writer.writerow([‘red‘,‘blue‘,‘green‘])  #写入一行内容
 5     test_writer.writerow([‘test_string‘]*5)
 6 
 7 with open(‘test.csv‘,newline=‘‘)as fp:
 8     test_reader=csv.reader(fp,delimiter=‘ ‘,quotechar=‘"‘)  #创建reader对象
 9     for row in test_reader: #遍历所有行
10         print(row)  #每行作为一个列表返回
11         # [‘red‘, ‘blue‘, ‘green‘]
12         # [‘test_string‘, ‘test_string‘, ‘test_string‘, ‘test_string‘, ‘test_string‘]
13 
14 with open(‘test.csv‘,newline=‘‘)as fp:
15     test_reader=csv.reader(fp,delimiter=‘:‘,quotechar=‘"‘)  #使用不同的分隔符
16     for row in test_reader:
17         print(row)  #与上面的输出不同
18         # [‘red blue green‘]
19         # [‘test_string test_string test_string test_string test_string‘]
20 
21 with open(‘test.csv‘,newline=‘‘)as fp:
22     test_reader=csv.reader(fp,delimiter=‘ ‘,quotechar=‘"‘)
23     for row in test_reader:
24         print(‘,‘.join(row))    #重新组织数据形式
25         # red, blue, green
26         # test_string, test_string, test_string, test_string, test_string
27 
28 with open(‘name.csv‘,‘w‘)as fp:
29     headers=[‘姓氏‘,‘名字‘]
30     test_dictWrite=csv.DictWriter(fp,fieldnames=headers)    #创建DictWriter对象
31     test_dictWrite.writeheader()    #写入表头信息
32     test_dictWrite.writerow({‘姓氏‘:‘张‘,‘名字‘:‘山‘})    #写入数据
33     test_dictWrite.writerow({‘姓氏‘:‘刘‘,‘名字‘:‘蛤蟆‘})
34     test_dictWrite.writerow({‘姓氏‘: ‘赖‘, ‘名字‘: ‘天鹅‘})
35 
36 with open(‘name.csv‘)as fp:
37     test_dictReader=csv.DictReader(fp)  #创建DictReader对象
38     print(‘,‘.join(test_dictReader.fieldnames)) #读取表头信息
39     for row in test_dictReader:
40         print(row[‘姓氏‘],‘,‘,row[‘名字‘])
41 # 姓氏,名字
42 # 张 , 山
43 # 刘 , 蛤蟆
44 # 赖 , 天鹅