3分钟通过日志定位bug，这个技能测试人必须会！

import logging
logging.basicConfig(level=logging.DEBUG,  #设置级别，根据等级显示
    format='%(asctime)s-[%(filename)s-->line:%(lineno)d]-%(levelname)s:% (message)s')  # 设置输出格式
logging.debug('This is a debug log')
logging.info('This is a info log')
logging.warning('This is a warning log')
logging.error('This is a error log')
logging.critical('This is a critical log')

import logging
logging.basicConfig(level=logging.WARNING,  #设置级别，根据等级显示
    format='%(asctime)s-[%(filename)s-->line:%(lineno)d]-%(levelname)s:% (message)s')  # 设置输出格式
logging.debug('This is a debug log')
logging.info('This is a info log')
logging.warning('This is a warning log')
logging.error('This is a error log')
logging.critical('This is a critical log')

import logging
logging.basicConfig(level=logging.DEBUG,  #设置级别，根据等级显示
    format='%(asctime)s-[%(filename)s-->line:%(lineno)d]-%(levelname)s:% (message)s')  # 设置输出格式
logging.debug('This is a debug log')

import logging
logging.basicConfig(
    level=logging.WARNING,  #设置级别，根据等级显示
    filename='example.log'
    format='%(asctime)s-[%(filename)s-->line:%(lineno)d]-%(levelname)s:% (message)s')  # 设置输出格式
logging.debug('This is a debug log')
logging.info('This is a info log')
logging.warning('This is a warning log')
logging.error('This is a error log')
logging.critical('This is a critical log')

import logging
#  第一步创建一个logger，用来产生日志
logger = logging.getLogger('%s_log' % __name__)
logger.setLevel(logging.DEBUG)  # 设置日志等级

# 创建一个文本处理器用来将日志写入到文件
file_handler = logging.FileHandler(filename='py34.log',encoding='utf-8')
file_handler.setLevel('WARNING')  # 设置处理器的日志等级
# 创建一个控制台处理器用来将日志输出到控制台
console_handler = logging.StreamHandler()
console_handler.setLevel('INFO')  # 设置控制台处理器的日志等级

formatter = logging.Formatter(fmt='%(levelname)s %(asctime)s [%(filename)s-->line:%(lineno)d]:%(message)s')

file_handler.setFormatter(formatter)
console_handler.setFormatter(formatter)

logger.addHandler(file_handler)
logger.addHandler(console_handler)

logger.info('This is a info')

logger.warning('This is a warning')

import logging
from logging.handlers import TimedRotatingFileHandler




def get_logger(name, filename, encoding='utf-8', fmt=None, when='d', interval=1, backup_count=7, debug=False):
    """


    :param name: 日志器的名字
    :param filename: 日志文件名(包含路径)
    :param encoding: 字符编码
    :param fmt: 日志格式
    :param when: 日志轮转时间单位
    :param interval: 间隔
    :param backup_count: 日志文件个数
    :param debug: 调试模式
    :return:
    """
    logger = logging.getLogger(name)
    logger.setLevel(logging.DEBUG)
    # 文件处理器的等级一般情况一定比控制台要高
    if debug:
        file_level = logging.DEBUG
        console_level = logging.DEBUG
    else:
        file_level = logging.WARNING
        console_level = logging.INFO


    if fmt is None:
        fmt = '%(levelname)s %(asctime)s [%(filename)s-->line:%(lineno)d]:%(message)s'


    file_handler = TimedRotatingFileHandler(
        filename=filename, when=when, interval=interval, backupCount=backup_count, encoding=encoding)
    file_handler.setLevel(file_level)


    console_handler = logging.StreamHandler()
    console_handler.setLevel(console_level)


    formatter = logging.Formatter(fmt=fmt)
    file_handler.setFormatter(formatter)
    console_handler.setFormatter(formatter)


    logger.addHandler(file_handler)
    logger.addHandler(console_handler)


    return logger




if __name__ == '__main__':
    log = get_logger(name='py41', filename='py41.log', debug=True, when='s')
    log.info('我是普通信息')
    import time
    time.sleep(3)
    log.warning('我是警告信息')

from .log_handler import get_logger
logger = get_logger('py41', 'py38.log')

from common import logger

...
@list_data(*cases)
    def test_login(self, case):
        """
        登陆测试
        """
        logger.info('测试用例【{}】开始测试'.format(case['title']))
        # 1. 测试数据
        # 传入进来的case参数
        logger.info('测试用例【{}】的测试数据是:{}'.format(case['title'], case))
        # 2. 测试步骤
        res = login_check(case['username'], case['password'])
        logger.info('测试用例【{}】的测试结果是:{}'.format(case['title'], res))
        # 3. 断言
        try:
            self.assertEqual(res, case['expect'])
        except AssertionError as e:
            logger.error('测试用例【{}】断言失败'.format(case['title']))
            raise e
        else:
            logger.info('测试用例【{}】断言成功'.format(case['title']))
        finally:
            logger.info('测试用例【{}】测试结束')