# -*- coding: UTF-8 -*-

import logging
# logging.info('老弟，来了')   # 不打印，info级别
# logging.warning('来错地方来') # 输出屏幕，警告级别

logging.basicConfig(filename='myapp.log',level=logging.INFO)
logging.info('info msg')   
logging.warning('WR msg') 
logging.debug('DUG msg')

#======================= 示例 =========================#
# -*- encoding:utf-8 -*-
import logging

# create logger
logger_name = "example"
logger = logging.getLogger(logger_name)
logger.setLevel(logging.DEBUG)

# create file handler
log_path = "./log.log"
fh = logging.FileHandler(log_path)
fh.setLevel(logging.WARN)

# create formatter
fmt = "%(asctime)-15s %(levelname)s %(filename)s %(lineno)d %(process)d %(message)s"
datefmt = "%a %d %b %Y %H:%M:%S"
formatter = logging.Formatter(fmt, datefmt)

# add handler and formatter to logger
fh.setFormatter(formatter)
logger.addHandler(fh)

# print log info
logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')
logger.error('error message')
logger.critical('critical message')

"""
##### 文件配置
配置文件logging.conf如下:
```[loggers]
keys=root,example01

[logger_root]
level=DEBUG
handlers=hand01,hand02

[logger_example01]
handlers=hand01,hand02
qualname=example01
propagate=0

[handlers]
keys=hand01,hand02

[handler_hand01]
class=StreamHandler
level=INFO
formatter=form02
args=(sys.stderr,)

[handler_hand02]
class=FileHandler
level=DEBUG
formatter=form01
args=('log.log', 'a')

[formatters]
keys=form01,form02

[formatter_form01]
format=%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s```

使用程序logger.py如下:
```#!/usr/bin/python
# -*- encoding:utf-8 -*-
import logging
import logging.config

logging.config.fileConfig("./logging.conf")

# create logger
logger_name = "example"
logger = logging.getLogger(logger_name)

logger.debug('debug message')
logger.info('info message')
logger.warn('warn message')
logger.error('error message')
logger.critical('critical message')
"""

##### 字典配置
# 有兴趣的童靴可以使用```logging.config.dictConfig(config)```编写一个示例程序发给我，以提供给我进行完善本文。

##### 监听配置
# 有兴趣的童靴可以使用```logging.config.listen(port=DEFAULT_LOGGING_CONFIG_PORT)```编写一个示例程序发给我，以提供给我进行完善本文。

# 更多详细内容参考[logging.config日志配置](http://python.usyiyi.cn/python_278/library/logging.config.html#module-logging.config)