时间监测以及简单函数封装以及返回值

import  time
with open('db.txt',mode='at',encoding='utf_8') as f:
    f.write('%s xiayu\n'%time.strftime('%Y-%m-%d %X'))
with open('db.txt',mode='rb') as  f :
    f.seek(0,2)
    while True:
        line=f.readline()
        if len(line) == 0:
            continue
        else:
            print(line.decode('utf_8'),end='|')


#
# def max2(x,y):
#     if x>y:
#         return x
#     else:
#         return y
#
# res=max2(20,30)
# print(res*12)