python 正则表达式 re.findall &re.finditer

语法：

findall 搜索string，以列表形式返回全部能匹配的子串

re.findall(pattern, string[, flags])

finditer 搜索string，返回一个顺序访问每一个匹配结果（Match对象）的迭代器

re.finditer(pattern, string[, flags])

Case:

 #!use/bin/python
 #coding:utf-8

 import re

 str= "https://i.cnb1logs.co2m/Edi3tPosts.asp4x?opt=999"
 print str

 #正则匹配 单词字符+数字
 pattern =re.compile(r"(\w+)(\d+)")

 #findall全能匹配的list
 print 'findall (\w+)(\d+) :' ,re.findall(pattern,str)
 print type(re.findall(pattern,str))
 for x in re.finditer(pattern,str):
     print 'finditer (\w+)(\d+) :' ,x.group()

Output

 https://i.cnb1logs.co2m/Edi3tPosts.asp4x?opt=999
 findall (\w+)(\d+) : [('cnb', ''), ('co', ''), ('Edi', ''), ('asp', ''), ('', '')]
 <type 'list'>
 finditer (\w+)(\d+) : cnb1
 finditer (\w+)(\d+) : co2
 finditer (\w+)(\d+) : Edi3
 finditer (\w+)(\d+) : asp4
 finditer (\w+)(\d+) : 999

 ***Repl Closed***

quote:http://cuiqingcai.com/977.html