python读取txt、csv、xml

读取txt，无需引入任何包：

1 user_file = open('user_info.txt','r')
2 lines = user_file.readlines()
3 user_file.close()
4
5 for line in lines:
6     mail = line.split(',')[0]
7     username = line.split(',')[1]
8     pwd = line.split(',')[2]
9     print(mail,username,pwd)

user_info.txt

www.126.com,user1,pwd1
mail.163.com,user2,pwd2
mail.qq.com,user3,pwd3

读取csv，引入csv（使用wps或office创建excel另存为csv，不能擅自改后缀）：

1 import csv
2
3 data = csv.reader( open('csv_read.csv', 'r') )
4
5 for user in data:
6     print(user)
7     print('url = ',user[0],' | user = ',user[1], ' | pwd = ', user[2])

读取XML，引入xml.dom包（

node.firstChild.data获取文本

）：

1 from xml.dom import minidom
2
3 try:
4     dom = minidom.parse('data_info.xml')
5
6     root = dom.documentElement
7
8     print(root.nodeName)
9     print(root.nodeValue)
10     print(root.nodeType)
11     print(root.ELEMENT_NODE)
12
13     browser = root.getElementsByTagName('browser')
14     print(browser[0].firstChild.data)
15
16     browser2 = root.getElementsByTagName('browser2')
17     print(browser2[0].firstChild.data)
18
19     mails = root.getElementsByTagName('mail')
20     for mail in mails:
21         print(mail.firstChild.data)
22
23     users = root.getElementsByTagName('user')
24     i = 0
25     for user in users:
26         name = user.getElementsByTagName('name')
27         i += 1
28         print(i,'---',name[0].firstChild.data)
29         pwd = user.getElementsByTagName('pwd')
30         print(i,'---',pwd[0].firstChild.data)
31
32
33 except BaseException as msg:
34     print(msg)

 XML文件：

<info>
<base>
<platform>Windows</platform>
<platform2>Mac</platform2>
<platform3>liunx</platform3>
<browser>Firefox</browser>
<browser2>Chrome</browser2>
<browser3>IE</browser3>
</base>
<test>
<province>北京</province>
<province>广东</province>
<city>深圳</city>
<city>珠海</city>
<province>浙江</province>
<city>杭州</city>
</test>
<user>
<mail>mail.qq.com</mail>
<name>user1</name>
<pwd>pwd1</pwd>
</user>
<user>
<mail>www.126.com</mail>
<name>user2</name>
<pwd>pwd2</pwd>
</user>
<user>
<mail>mail.163.com</mail>
<name>user3</name>
<pwd>pwd3</pwd>
</user>
</info>

转载于:https://www.cnblogs.com/yaomaomao/p/8603680.html

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