AttributeError: 'UrlManager' object has no attribute 'new_urls'
Traceback (most recent call last):
? File "H:\python\qthnluwei\src\baike\spider_main.py", line 33, in <module>
? ? obj_Spider.craw(root_url)
? File "H:\python\qthnluwei\src\baike\spider_main.py", line 13, in craw
? ? self.urls.add_new_url (root_url)
? File "H:\python\qthnluwei\src\baike\url_manager.py", line 11, in add_new_url
? ? if url not in self .new_urls and url not in self.old_urls:
AttributeError: 'UrlManager' object has no attribute 'new_urls'
根據(jù)老師講的運行了程序，但報錯。沒有對new_urls定義？請問如何進行處理。
2017-02-22
class UrlManager(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
???????? for 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
2018-04-25
沒看懂 這段代碼有變化嗎？