python截取两个单词之间的内容方法

#!/usr/bin/python3
# -*- coding: utf-8 -*-
 
import re
 
#文本所在路径，引号前加r指按路径处理
#关键字word1,word2,换关键字，需修改引号间的内容
 
class match2Words(object):
 lines=0
 def __init__(self,path,word1,word2):
  self.path = path
  self.word1 = word1
  self.word2 = word2
 def key_match(self):
  with open(self.path,'rb') as f:
   buffer = f.read()
   pattern = re.compile(self.word1+b'(.*?)'+self.word2,re.S)
   result = pattern.findall(buffer)
   if result != []:
    print(result)
    #self.lines +=1
    #print("匹配到的行数：",self.lines)
   else:
    print("没有找到你输入的关键字")
 
path = input("请输入要分析的log地址：")
word1 = b"begin"
word2 = b"end"
matchWords = match2Words(path, word1, word2)
matchWords.key_match()