day19_ entering million annual salary of Day 19 - package, logging logs

day19

package

It has ______init______.py file folder is a package

method

• import package. package. Package

• from the package. pack. Pack import module

  Operation needs to be done in ______init______.py

path

• Importing absolute path: start importing from the outermost layer of the package

from ss.bake.api.policy import func
func()

• Introducing relative path: (.) ​​From the current start importing or superset (..) into

from ..api.www import ww
ww()

important point:

• Using a relative path must be introduced into the outermost layer of the package peer
• python2 the import package, if the package is not on the error ______init______.py
• python3 the import package, the bag is not being given no ______init______.py

logging

logging-- log

# import logging
# logging.debug('我是调试')
# logging.info('我是信息')
# logging.warning('我是警告')
# logging.error('我是错误')
# logging.critical('我是危险')

# 默认是从warning开始记录

# import logging
# logging.basicConfig(level=logging.DEBUG,
#                     format='%(asctime)s %(filename)s [line:%(lineno)d] %(levelname)s %(message)s',
#                     datefmt='%Y-%m-%d %H:%M:%S',
#                     filename='test.log',
#                     filemode='w')

# dic = {"key":123}
# logging.debug(dic)

# num = 100
# logging.info(f"用户当前余额:{num - 50}")

# try:
#     num = int(input("请输入数字:"))
# except Exception as e:
#     logging.warning("int将字符串转换报错了")
# print("12334")

# logging.error('我是错误')
# logging.critical('我是危险')

standard format

import logging
logger = logging.getLogger()
# 创建一个logger
fh = logging.FileHandler('test.log',mode="a",encoding='utf-8')   # 文件
ch = logging.StreamHandler()   # 屏幕
formatter = logging.Formatter('%(asctime)s - %(name)s - %(filename)s - [line:%(lineno)d] -  %(levelname)s - %(message)s')
# 将屏幕和文件都是用以上格式
logger.setLevel(logging.DEBUG)
# 设置记录级别
fh.setFormatter(formatter)
# 使用自定义的格式化内容
ch.setFormatter(formatter)
logger.addHandler(fh) #logger对象可以添加多个fh和ch对象
logger.addHandler(ch)


logger.debug('logger debug message')
logger.info('logger info message')
logger.warning('logger warning message')
logger.error('logger error message')
logger.critical('logger critical message')