(2018-05-20.Python从Zero到One)4、(爬虫)scrapy 框架__1.4.7Request/Response
RequestRequest部分源码:#部分代码classRequest(object_ref):def__init__(self,url,callback=None,method='GET',headers=None,body=None,cookies=None,meta=None,encoding='utf-8',priority=0,dont_filter=False,errback=Non