logger.py

import logging
import datetime
import random


class Singleton(type):
	_instances = {}

	def __call__(cls, *args, **kwargs):
		if cls not in cls._instances:
			cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
		return cls._instances[cls]


class TimeHandler(metaclass=Singleton):
	def __init__(self):
		self.now = datetime.datetime.now()
		self.file_name = \
			"./logs/log_{}-{}-{}_{}-{}-{}.log".format( \
				self.now.year, \
				self.now.month, \
				self.now.day, \
				self.now.hour, \
				self.now.minute, \
				self.now.second)
		self.handler = self.return_handler(self.file_name)

	@staticmethod
	def return_handler(log_name):
		# create a file handler
		handler = logging.FileHandler(log_name)
		handler.setLevel(logging.INFO)

		# create a logging format
		formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
		handler.setFormatter(formatter)
		return handler