遍历log文件，过滤文件内容，依次生成txt

import re
import sys
import csv
import os

output=sys.stdout
for file in os.listdir("C:/Users/Administrator/Desktop/Data_tidy/log_orig"):

    with open ("C:/Users/Administrator/Desktop/Data_tidy/log_orig/"+file,'r',encoding='UTF-8') as f:

        fileName = re.split('.',file)
        outputfile=open('C:/Users/Administrator/Desktop/Data_tidy/ios/'+fileName[0]+'.txt','w')
        #正则表达式体现过滤方式
        pattern = re.compile(r'(.*)(-----cpu)')
        
        for line in f:
            m=pattern.match(line)
            sys.stdout=outputfile
            if(m is not None):
                print (line,end = ' ')

    outputfile.close()

sys.stdout=output