python获取定制json文件

写在最前面，改json文件是多个json组成，每个json最前面都有一个名称,需要先获取名称之间的json串，然后再去json串之中的某个固定值的最大值
直接上代码:

#!/usr/bin/env python

import re
import json

def get_node_num():
    node_name=[]
    with open('test.log','r+') as file:
        resultlines=file.readlines()
        for resultline in resultlines:
            if resultline.startswith('CHN-'):
                node_name.append(resultline.strip())
    return node_name     

def get_result():
    node_name_list=get_node_num()
    f = open('文件名','r')
    buff = f.read()
    for num in range(len(node_name_list)):
        if num <= '430':
            start_mark=node_name_list[num]
            end_mark=node_name_list[num+1]
        elif num == '431':
            start_mark=node_name_list[num]
            end_mark=''
        pat = re.compile(start_mark+'(.*?)'+end_mark,re.S)
        result = pat.findall(buff)
        result = re.sub('[==.*==]','',result[0])
        value_list=[]
        with open('test1.json','w+') as file_w:
            file_w.write(result)
        with open('test1.json','r+') as file_r:
            r_lines=file_r.readlines()
            for line in r_lines:
                if 'value' in line:
                    value_list.append(line.split()[1])
        try:
            print node_name_list[num]+","+max(value_list)
        except Exception as e:
            print node_name_list[num],value_list
    f.close()

if __name__ == '__main__':
    get_result()