打印scrapy蜘蛛的抓取树结构，打印scrapy蜘蛛抓取,# This is a

打印scrapy蜘蛛的抓取树结构，打印scrapy蜘蛛抓取,# This is a

# This is a script to print the crawl tree of spider run.# # 使用方法:# #     $ python ctree.py myspider.log#     None#       http://www.example.com/start_page1#         http://www.example.com/second_page#         http://www.example.com/another_page#     None#       http://www.example.com/start_page2#         http://www.example.com/yet_another_page#!/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()