logger.py

import os
import time
import logging


###
# 1. 创建logger实例，如果参数为空则返回root logger
###

logger = logging.getLogger('aiotest')
# 设置总日志级别, 也可以给不同的handler设置不同的日志级别
logger.setLevel(logging.DEBUG)

###
# 2. 创建Handler, 输出日志到控制台和文件
###

# 控制台日志和日志文件使用同一个Formatter
formatter = logging.Formatter(
    '%(asctime)s - %(filename)s[line:%(lineno)d] - <%(threadName)s %(thread)d>' +
    '- <Process %(process)d> - %(levelname)s: %(message)s'
)

# 日志文件FileHandler
basedir = os.path.abspath(os.path.dirname(__file__))
log_dest = os.path.join(basedir, 'logs')  # 日志文件所在目录
if not os.path.isdir(log_dest):
    os.mkdir(log_dest)
filename = time.strftime('%Y-%m-%d-%H-%M-%S', time.localtime(time.time())) + '.log'  # 日志文件名，以当前时间命名
file_handler = logging.FileHandler(os.path.join(log_dest, filename))  # 创建日志文件handler
file_handler.setFormatter(formatter)  # 设置Formatter
# file_handler.setLevel(logging.INFO)  # 单独设置日志文件的日志级别

# 控制台日志StreamHandler
stream_handler = logging.StreamHandler()
stream_handler.setFormatter(formatter)
# stream_handler.setLevel(logging.DEBUG)  # 单独设置控制台日志的日志级别

###
# 3. 将handler添加到logger中
###

logger.addHandler(file_handler)
logger.addHandler(stream_handler)

###
# 或者，使用简单配置
###
# logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.DEBUG)
# logging.debug('This message should appear on the console')

# logging.basicConfig(format='%(asctime)s - %(message)s', datefmt='%Y-%m-%d', level=logging.DEBUG)
# logging.debug('datetime format has changed to 2018-06-01')

# logging.basicConfig(filename='test.log', level=logging.DEBUG)
# logging.debug('This message should go to test.log')