#!/usr/bin/env python3
from datetime import datetime
match_str1 = "description"
match_str2 = "interface"
with open("config.txt") as f_in:
    lines = f_in.readlines()
current_time = datetime.today().strftime("%d.%m.%Y_%H.%M.%S")
with open("textfile1_{}.txt".format(current_time), "w") as f1_out, open("textfile2_{}.txt".format(current_time), "w") as f2_out:
    for line in lines:
        if match_str1 in line:
            f1_out.write(line)
        if match_str2 in line:
            f2_out.write(line)
print( "\nDone!\n")