python 装饰器类

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

from functools import wraps    class logit(object):     def __init__(self, logfile='out.log'):         self.logfile = logfile        def __call__(self, func):         @wraps(func)         def wrapped_function(*args, **kwargs):             log_string = func.__name__ + " was called"             print(log_string)             # 打开logfile并写入             with open(self.logfile, 'a') as opened_file:                 # 现在将日志打到指定的文件                 opened_file.write(log_string + '\n')             # 现在，发送一个通知             self.notify()             return func(*args, **kwargs)         return wrapped_function        def notify(self):         # logit只打日志，不做别的         pass

?

1 2 3

@logit() def myfunc1():     pass

　　

?

1 2 3 4 5 6 7 8 9 10 11 12

class email_logit(logit):     '''     一个logit的实现版本，可以在函数调用时发送email给管理员     '''     def __init__(self, email='admin@myproject.com', *args, **kwargs):         self.email = email         super(email_logit, self).__init__(*args, **kwargs)        def notify(self):         # 发送一封email到self.email         # 这里就不做实现了         pass