import datetime

​

# 日期

# date = datetime.date(2018,6,19)

# print(date)

# print(type(date))

​

# 时间 : : :

# t = datetime.time(10,50,30,1000)

# print(t)

# print(type(t))

​

# 日期时间

# dt = datetime.datetime(2018,6,19,10,55,30)      # 日期必须要有，时间可以没有

# print(dt)

# print(type(dt))

​

# 时间间隔

# dlt = datetime.timedelta(hours=4)

# print(dlt)

# print(type(dlt))

# print(dt + dlt)

​

# 当前时间 东八区

# now = datetime.datetime.now()

# print(now)

​

# 格林威治时间

# utc = datetime.datetime.utcnow()

# print(utc)

​

# 北京时间，东八区时间

# delt = datetime.timedelta(hours=8)

# bei_jing = utc + delt

# print(bei_jing)

​

# 解析时间

# strp = datetime.datetime.strptime('jun-14-18 11:45','%b-%d-%y %H:%M')

# print(strp)

​

# 格式化时间

# strf = now.strftime('%Y-%m-%d %H:%M:%S')

# print(strf)

​

# 时间戳转换成日期时间

# t = datetime.datetime.fromtimestamp(0)

# print(t)

​

# 日期时间转换成时间戳

# t1 = t.timestamp()

# print(t1)

​

# 获取datetime对象中数据

now = datetime.datetime.now()

# print(now)

# 小时 分钟 秒钟

# print(now.hour)

# print(now.month)

# print(now.day)

# 星期

# print(now.weekday())        # 范围0-6

# print(now.isoweekday())     # 范围1-7

# iso标准化日期   isocalendar(...)   # year年份，week number 周数，weekday星期

# a = now.isocalendar()

# year = now.isocalendar()[0]

# weekNum = now.isocalendar()[1]

# weekdaY = now.isocalendar()[2]

# print(a)

# print(year)

# print(weekNum)

# print(weekdaY)

​

# 计算你出生了多久

def how_long(year,month,day,hour=0,minut=0,second=0):

    return datetime.datetime.now() - datetime.datetime(year,month,day,hour,minut,second)

​

a = how_long(1997,9,3)

print(a)

import logging

​

​

# 1.初始化，实例化的过程

logger = logging.getLogger('test_log')

​

# 2.设置级别

logger.setLevel(logging.DEBUG)  # 设置最低级别，小于它的级别不会输出

​

# 3.定义handler

# 3.1 控制台输出

sh = logging.StreamHandler()

sh.setLevel(logging.ERROR)      # error 情况下，就会在控制台输出

​

# 3.2 写入log文件

fh = logging.FileHandler('test_file')

fh.setLevel(logging.DEBUG)      # debug 级别以上我就写入log文件里

​

# 4.定义日志格式，格式化

formatter = logging.Formatter(

    '时间: &(asctime)s,'

    '日志级别: %(levelname)s,'

    '日志消息: %(message)s'

)

# 把定义好的格式化添加到我们刚才定义的handler当中去

sh.setFormatter(formatter)

fh.setFormatter(formatter)

​

# 将我们的handler添加到logger里面去

logger.addHandler(sh)

logger.addHandler(fh)

​

​

if __name__ == '__main__':

    # logger.debug('测试')

    # logger.info('正常运行')

    # logger.warn('警告')

    # logger.error('报错')

    # logger.critical('非常严重的错误')

​

​

    def func(a):

        try:

            num = 20/a

            logger.info(num)    # 如果不报错，就正常运行

        except Exception as e:

            logger.error(e)

            # 如果报错，就把报错信息扔进来，然后返回这个级别

​

    func(0)