text = 'This string1 is an example for match string2' text = text . replace ( ' ' , '' ) #去空格 result = re . findall ( r 'string1|string2' , text ) #分别匹配两种模式 print ( result ) #>>>['string1', 'string2'] #------------------------------------------------------------# result2 = re . findall ( r 'This(.*?)isanexampleformatch(.*$)' , text ) print ( result2 ) #可同时输出两个或多个匹配的结果 #>>>[('string1', 'string2')] #------------------------------------------------------------# #当带匹配文档包含多行时，需要使用re.S来开启多行模式 text_multi = 'This string1 is \n an example \n for match string2' text_multi = text_multi . replace ( ' ' , '' ) #去空格 result3 = re . findall ( r 'string(.*?)' , text_multi , re . S ) #利用re.S开启多行模式来忽略\n换行 print ( result3 ) #>>>['string1', 'string2'] pic form pexels

https://blog.csdn.net/u010042787/article/details/78488308
https://blog.csdn.net/abclixu123/article/details/38502993
https://www.crummy.com/software/BeautifulSoup/bs4/doc/index.zh.html#id17
http://www.cnblogs.com/csj007523/p/7641749.html
re.S: http://www.cnblogs.com/xieqiankun/p/re-sinpython.html