本文實(shí)例講述了Python打印scrapy蜘蛛抓取樹結(jié)構(gòu)的方法。分享給大家供大家參考。具體如下：

通過下面這段代碼可以一目了然的知道scrapy的抓取頁面結(jié)構(gòu)，調(diào)用也非常簡(jiǎn)單

#!/usr/bin/env pythonimport fileinput, refrom collections import defaultdictdef print_urls(allurls, referer, indent=0):  urls = allurls[referer]  for url in urls:    print ' '*indent + referer    if url in allurls:      print_urls(allurls, url, indent+2)def main():  log_re = re.compile(r'<GET (.*?)> /(referer: (.*?)/)')  allurls = defaultdict(list)  for l in fileinput.input():    m = log_re.search(l)    if m:      url, ref = m.groups()      allurls[ref] += [url]  print_urls(allurls, 'None')main()

希望本文所述對(duì)大家的Python程序設(shè)計(jì)有所幫助。