摘要：新建scrapy项目scrapy startproject [projectName]开启爬虫进入项目根目录scrapy crawl [-a key=value] [spidername] [-o output.json] //输出json格式scrapy shell进入项目根目录scrapy s... 阅读全文

摘要：def create_multipliers(): return [lambda x,i=i : i * x for i in range(5)]for multiplier in create_multipliers(): print multiplier(2) 阅读全文

摘要：在scrapy 项目目录下运行scrapy crawl Test --logfile=test.log -o test.json -t jsonscrapy shell urltest spider名test.log 日志test.json 输出的itemDOWNLOAD_DELAY = 2... 阅读全文

摘要：type()import inspectprint(inspect.getargspec(func)) //查方法参数hasattr(list,'append')isinstance(1,(int,float))raise TypeError('')_class__name__base__dict_... 阅读全文