E:\python\venv\Scripts\python.exe E:/python/baike_spider/spider_main.py

Traceback (most recent call last):

  File "E:/python/baike_spider/spider_main.py", line 38, in <module>

    obj_spider.craw(root_url)

  File "E:/python/baike_spider/spider_main.py", line 14, in craw

    self.urls.add_new_url(root_url)

AttributeError: 'SpiderMain' object has no attribute 'urls'

Process finished with exit code 1