python26 re正则表达式

#coding:utf-8

#/usr/bin/python

"""

2018-11-25

dinghanhua

re

"""

import re

teststr = '"id":"2994925","publisher":"Yahoo Press","isbn10":"0596517742","isbn13":"9780596517748","title":"JavaScript","url":"https:\/\/api.douban.com\/v2\/book\/2994925","alt_title":"","author_intro":"Douglas Crockford is a Senior JavaScript Architect at Yahoo!. He is the maintainer of the JSON format, and a regular speaker at conferences on advanced JavaScript topic. He is also on the JavaScript 2.0 committee at ECMA."'

'''re.match() 从字符串的起始位置匹配 '''

pattern = r'\d+'

print(re.match(pattern,teststr))

pattern = r'"id":"(.*)","publisher'

matchobj = re.match(pattern,teststr)

print(matchobj.group(0))

print(matchobj.groups())

print(matchobj.group(1))

print(matchobj.span())

print(matchobj.start(),matchobj.end())

'''re.search() 返回字符串中第一个匹配的 '''

pattern = r'\d+'

print(re.search(pattern,teststr))

pattern = r'"id":"(.*?)".*"title":"(.*?)"'

matchobj = re.search(pattern,teststr)

print(matchobj.group(0))

print(matchobj.groups())

print(matchobj.group(1,2))

print(matchobj.span())

print(matchobj.start(),matchobj.end())

'''re.sub() 替换匹配项 repl=替换的字符串，count替换几个，默认0替换所有'''

pattern = r'\d+'

teststr2 = re.sub(pattern,repl='',string=teststr,count=1)

print(teststr2)

pattern = r'\D+'

teststr2 = re.sub(pattern,"",teststr) #去掉所有非数字

print(teststr2)

'''compile()生成正则表达式对象'''

pattern = re.compile(r'"(\w+)":"(\w+)"')

matchobj = pattern.match(teststr)

print(matchobj.groups())

matchobj = pattern.search(teststr,10,100) #设定起始结束位置

print(matchobj.groups())

'''findall 匹配所有，返回列表'''

pattern = r'"(\w+)":"(\d+)"'

matchlist = re.findall(pattern,teststr)

print(matchlist)

pattern = re.compile(r'"(\w+)":"(\D+)"')

matchlist = pattern.findall(teststr,10)

print(matchlist)

'''re.finditer 匹配所有，返回迭代器'''

pattern = r'"(\w+)":"(\d+)"'

matchiter = re.finditer(pattern,teststr)

print(matchiter)

for m in matchiter:

    print(m.groups())

'''re.split() 正则分隔'''

pattern = r'[^a-zA-Z]+' #根据非字母分隔

splitlist = re.split(pattern,teststr)

print(splitlist)