import os
import re
arg = b'<yazdmich>'
files = [i for i in os.listdir() if i.endswith(".log")]
print(file for file in files)
with open('output.txt', mode='wb') as output:
        for file in files:
                with open(file, mode='rb') as log:
                        for line in log:
                                string1 = re.search(arg, line)
                                if string1:
                                        out = re.sub(b'.*'+arg+b' ', b'', line)
                                        print(out.decode())
                                        output.write(out)