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程序不報(bào)錯(cuò)，但是沒有結(jié)果。

為什么我運(yùn)行的程序沒有報(bào)錯(cuò)，但是沒有看到結(jié)果，我用的是anaconda3 的spyder里面寫的程序。#spider main code
#from? baike_spider import url_manager,html_downloader,html_parser,html_outputer
class spidermain(object):
??? def __init__(self):
??????? self.urls=manager()
??????? self.downloader=htmldownloader()
??????? self.parser=htmlparser()
??????? self.outputer=htmloutputer()
?????? ?
??? def craw(self,root_url):
??????? count=1
??????? self.urls.add_new_url(root_url)
??????? while self.urls.has_new_url():
??????????? try:
??????????????? new_url=self.urls.get_new_url()
??????????????? html_cont=self.downloader.downloader(new_url)
??????????????? print ('carw %d : %s'%(count,new_url))
??????????????? new_urls,new_data=self.paser.parse(new_url,html_cont)
??????????????? self.urls.add_new_urls(new_urls)
??????????????? self.outputer.collect_data(new_data)
?????? ?
??????????????? if count==1000:
??????????????????? break
??????????????? count+=1
??????????? except:
???????????????? print ('craw failed')
??????? self.outputer.output_html()
?????????? ?
?????? ?
??????? if __name__=='__main__':
??????????? root_url='http://baike.baidu.com/link?url=HiLgunmevYfwmNeyDfoDsrKn4d2OSBg-wcbpXCMCLKo53TPcrL8mGOW-xBdn5Q_gOaMVAQFmXIqkpKNAjQyR2a'
??????????? obj_spider=spidermain()
??????????? obj_spider.craw(root_url)

#html管理器? html_manager模塊
class manager(object):
??? def __init__(self):
??????? self.new_urls=set()
??????? self.old_urls=set()
?? ?
??? def add_new_url(self,url):
??????? if url is None:
??????????? return
??????? if url not in self.new_urls and url not in self.old_urls:
??????????? self.new_urls.add(url)

??? def add_new_urls(self,urls):
??????? if urls is None or len(urls)==0:
??????????? return
??????? if url in urls:
??????????? self.add_new_url(url)
?????? ?
??? def has_new_url(self):
??????? return len(self.new_urls)!=0

??? def get_new_url(self):
??????? new_url=self.new_urls.pop()
??????? self.old_urls.add(new_url)
??????? return new_url
???????? ?
#html下載器? htmldownloader模塊
import urllib.request
import urllib.error
class htmldownloader(object):
??? def download(self,url):
??????? if url is None:
??????????? return None
??????? response=urllib.request.ulropen(url)
??????? if response.getcode()!=200:
??????????? return None
??????? return response.read()
?????? ?
#html解析器? htmlparse模塊
from bs4 import BeautifulSoup
import re
import urllib.parse

class htmlparser(object):
?? ?
??? def _get_new_urls(self,page_url,soup):
??????? new_urls=set()
??????? #<a target="_blank" href="/view/592974.htm">解釋器</a>
??????? links=soup.find_all('a',href=re.complie(r'/view/\d+\.htm'))
??????? for link in links:
??????????? new_url=link['href']
??????????? new_full_url=urllib.parse.urljoin(page_url,new_url)
??????????? new_urls.add(new_full_url)
??????? return new_urls
?? ?
??? def _get_new_data(self,page_url,soup):
??????? res_data={}
??????? #url
??????? res_data['url']=page_url
??????? #<dd class="lemmaWgt-lemmaTitle-title"><h1>Python</h1>
??????? title_node=soup.find('dd',class_='lemmaWgt-lemmaTitle-title').find('h1')
??????? res_data['title']=title_node.get_text()
?????? ?
??????? #<div class="lemma-summary" label-module="lemmaSummary"></div>? ?
??????? summary_node=soup.find('div',class_='lemma-summary')
??????? res_data['summary']=summary_node.get_text()
??????? return res_data
?????? ?
??? def parse(self,page_url,html_count):
??????? if page_url is None or html_count is None:
??????????? return
??????? soup=BeautifulSoup(html_count,'html.parser',form_encoding='utf-8')
??????? new_urls=self._get_new_urls(page_url,soup)
??????? new_data=self._get_new_data(page_url,soup)
??????? return new_urls,new_data
?????? ?
#html輸出器 htmloutputer模塊

class htmloutputer(object):
??? def __init__(self):
??????? self.datas=[]
?? ?
??? def collect_data(self,data):
??????? if data is None:
??????????? return
??????? self.datas.append(data)
?????? ?
??? def output_html(self):
??????? fout=open('output.html','w')
?????? ?
??????? fout.write('<html>')
??????? fout.write('<body>')
??????? fout.write('<table>')
?????? ?
??????? #ascii
??????? for data in self.datas:
??????????? fout.write('<tr>')
??????????? fout.write('<td>%s</td>'%data['url'])
??????????? fout.write('<td>%s</td>'%data['title'],edcoding='utf-8')
??????????? fout.write('<td>%s</td>'%data['summary'],edcoding='utf-8')
??????????? fout.write('<tr>')
?????? ?
??????? fout.write('</table>')
??????? fout.write('</body>')
??????? fout.write('</html>')
?????? ?
??????? fout.close()