Python网页抓取，符号含义

Question

在下面的代码中，符号字符串re.sub('<[^>]*>|[\n]|\[[0-9]*\]', '', htmlread)的每个元素是什么意思？

import urllib2 
import re 

htmltext = urllib2.urlopen("https://en.wikipedia.org/wiki/Linkin_Park") 
htmlread = htmltext.read() 
htmlread = re.sub('<[^>]*>|[\n]|\[[0-9]*\]', '', htmlread) 
regex = '(?<=Linkin Park was founded)(.*)(?=the following year.)' 
pattern = re.compile(regex) 
htmlread = re.findall(pattern, htmlread) 
print "Linkin Park was founded" + htmlread[0] + "the following year." 

Answer 1

的

线htmlread = re.sub('<[^>]*>|[\n]|\[[0-9]*\]', '', htmlread)去除要么

• <> OR
• 换行符之间的表达
• 括号或空括号

从htmlread之间的数

有趣维基张贴在这里：Reference - What does this regex mean?

Answer 2

替换“”的每一个字符，这意味着从htmlread可变

删除，请阅读更多关于正则表达式