Python Scrapy-NameError：全局名称'；记录器'；没有定义

我试图通过修改中间件来稍微修改Scrapy retry。我使用这个中间件：

class Retry500Middleware(RetryMiddleware):

    def _retry(self, request, reason, spider):
        retries = request.meta.get('retry_times', 0) + 1

        if retries <= self.max_retry_times:
            logger.debug("Retrying %(request)s (failed %(retries)d times): %(reason)s",
                         {'request': request, 'retries': retries, 'reason': reason},
                         extra={'spider': spider})
            retryreq = request.copy()
            retryreq.meta['retry_times'] = retries
            retryreq.meta['download_timeout'] = 600
            retryreq.dont_filter = True
            retryreq.priority = request.priority + self.priority_adjust
            return retryreq
        else:
            logger.error("Gave up retrying %(request)s (failed %(retries)d times): %(reason)s",
                         {'request': request, 'retries': retries, 'reason': reason},
                         extra={'spider': spider})

类Retry500Middleware（RetryMiddleware）：
def_重试（自身、请求、原因、爬行器）：
retries=request.meta.get（'retry_times'，0）+1
如果最后重试，我将使用此代码

import logging
logging.log(logging.ERROR, "Gave up retrying %(request)s (failed %(retries)d times): %(reason)s",
                         {'request': request, 'retries': retries, 'reason': reason},
                         extra={'spider': spider})

您可以将self.logger=logging.getLogger（name）放入泛型函数中。init（），也可以在导入日志后定义全局记录器。请参阅以下答案：


import logging
logging.log(logging.ERROR, "Gave up retrying %(request)s (failed %(retries)d times): %(reason)s",
                         {'request': request, 'retries': retries, 'reason': reason},
                         extra={'spider': spider})

import logging
logger = logging.getLogger(__name__)