logging模块实际使用调试说明

start.py :

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import sys,os                                   #应该把项目的根目录添加到环境变量中 BASE_DIR=os.path.dirname(os.path.dirname(__file__)#os.path.dirname(__file__) 获取当前文件上一级路径名 sys.path.append(BASE_DIR)                       #拿到ATM所在的文件夹 from core import src ​ src.run() sys.path.append(r'D:\code\SH_fullstack_s1\day15\ATM') 添加的是绝对路径，不支持移植到别的硬件上运行   src.py :   from conf import settings from lib import common ​ logger1=common.get_logger('atm') ​ def login():     print('登录....')     with open(settings.DB_PATH,encoding='utf-8') as f:         for line in f:             print(line) ​ def register():     print('注册....') ​ def shop():     print('购物....') ​ def pay():     print('支付...') ​ def transter():     print('转账...')     common.logger('xxxx给他爹xx转账10000')     logger1.debug('xxxx给他爹xx转账10000')     logger1.error('xxxx给他爹xx转账10000,转账失败') ​ def run():     while True:         print("""         1 登录         2 注册         3 购物         4 支付         5 转账         """) ​         choice=input('>>: ').strip()         if choice == '1':             login()         elif choice == '2':             register()         elif choice == '3':             shop()         elif choice == '4':             pay()         elif choice == '5':             transter()         else:             print('输入错误指令')

settings.py:

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DB_PATH=r'D:\code\SH_fullstack_s1\day15\ATM\db\db.txt' #自定义设置的文件路径 LOG_PATH=r'D:\code\SH_fullstack_s1\day15\ATM\log\access.log' LOGGING_DIC = {.....}               #log配置字典

common.py :

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from conf import settings ​ def logger(msg):     with open(settings.LOG_PATH,'a',encoding='utf-8') as f:         f.write('%s\n' %msg) ​           import logging.config import logging from conf import settings ​ def get_logger(name): #name='atm'     logging.config.dictConfig(settings.LOGGING_DIC)  # 导入上面定义的logging配置     l1=logging.getLogger(name)     return l1

logging 模块

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import logging logging.basicConfig(      #为logging模板指定全局配置，针对所有logger有效，控制打印到文件中 filename='access.log',          # /stream=sys.stdout 打印在屏幕上，但和filename只能存在其一 format='%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s', datefmt='%Y-%m-%d %H:%M:%S %p', level=40 ) logging.debug('debug...') # 10 logging.info('info....') #20 logging.warning('.....') #30 logging.error('......') # 40 logging.critical('.....') #50

 

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6.51 logging模块的四类对象 logger:负责产生日志   logger1=logging.getLogger('xxx') filter：过滤日志（不常用）   handler：控制日志打印到文件or终端   fh1=logging.FileHandler(filename='a1.log',encoding='utf-8') fh2=logging.FileHandler(filename='a2.log',encoding='utf-8') sh=logging.StreamHandler() formatter：控制日志的格式   formatter1=logging.Formatter( fmt='%(asctime)s - %(name)s - %(levelname)s -%(module)s:  %(message)s', datefmt='%Y-%m-%d %H:%M:%S %p', ) ​ formatter2=logging.Formatter(fmt='%(asctime)s - %(message)s',) logger ---->多个file handler <----多个formatter   绑定关系：   1.为logger1对象绑定handler：   logger1.addHandler(fh1) logger1.addHandler(fh2) logger1.addHandler(sh) 2.为handler对象绑定日志格式   fh1.setFormatter(formatter1) fh2.setFormatter(formatter1) sh.setFormatter(formatter2) 设定日志级别: 两层关卡，必须都通过，日志才能正常记录   logger1.setLevel(10) fh1.setLevel(10) fh2.setLevel(10) sh.setLevel(10) ​ #调用logger1对象下的方法，产生日志，然后交给不同的handler，控制日志记录到不同的地方 logger1.debug('调试信息')   #调用logger1，产生日志 日志的继承   import logging logger1=logging.getLogger('xxx') logger2=logging.getLogger('xxx.son') logger3=logging.getLogger('xxx.son.grandson') ​ sh=logging.StreamHandler() ​ formatter2=logging.Formatter(fmt='%(asctime)s - %(message)s',) ​ sh.setFormatter(formatter2) ​ logger1.addHandler(sh) logger2.addHandler(sh) logger3.addHandler(sh) ​ logger1.setLevel(10) logger2.setLevel(10) logger3.setLevel(10) sh.setLevel(10) ​ logger1.debug('测试。。。。') logger2.debug('测试。。。。') logger3.debug('测试。。。。')