scrapy crawl dappMarketSpider -a time_span_list=hour,day,week,month,all
class dappMarketSpider(baseSpider):
def start_requests(self):
pass
def parse(self, response):
# time_span_list = ["hour", "day", "week", "month", "all"]
time_span_list = self.time_span_list.split(",")