Python中的日志记录模块多次打印相同的错误并多次发送邮件

Question

我正在尝试通过邮件发送错误消息。下面是我的代码，它发送3-4次相同的错误邮件，并多次写入日志文件。如何解决这个问题？在下面的代码中，我从url中删除了第一个字符以创建错误。

def get_logger(    
        LOG_FORMAT     = '%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
        LOG_NAME       = '',
        LOG_FILE_INFO  = 'file.log',
        LOG_FILE_ERROR = 'file.err'):

    log           = logging.getLogger(LOG_NAME)
    if not len(log.handlers):
        log_formatter = logging.Formatter(LOG_FORMAT)

        file_handler_error = logging.FileHandler(LOG_FILE_ERROR, mode='w')
        file_handler_error.setFormatter(log_formatter)
        file_handler_error.setLevel(logging.ERROR)
        log.addHandler(file_handler_error)
        log.setLevel(logging.INFO)

        #email sending
        smtp_handler = logging.SMTPHandler(mailhost=("smtp.gmail.com", 25),
                                                fromaddr="abcd@gmail.com", 
                                                toaddrs="xyz@gmail.com",
                                                subject=u"Job App error!",
                                                credentials=('abcd@gmail.com', 'xxxxx'),
                                                secure=())

        log.addHandler(smtp_handler)

    return log

def main():

try:
        url = 'ttp://www.google.com'
        response = requests.get(url)

except Exception as e:
            logger.error(e.message)



if __name__ == '__main__':
    logger = get_logger()
    main()