set log name

log.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os


LOG_BASE_NAME = 'snmp_info.log'
INDEX = 0

while True:
    LOG_NAME = LOG_BASE_NAME + ("." + str(INDEX) if INDEX else '')
    if not os.path.exists(LOG_NAME):
        break
    else:
        INDEX+=1

with open(LOG_NAME, 'w+') as f:
    f.write(LOG_NAME)

print("%s:%sB" % (LOG_NAME, os.stat(LOG_NAME).st_size))