Robobrowser BeautifulSoup错误

Question

我正在做一个网络爬行器来登录一个网站，当我登录的时候，我收到了一个beautifulSoup错误，我不知道如何解决，还有一个对象错误，我也很困惑。我已经看了一段时间的网络抓取教程，真的需要帮助

from robobrowser import RoboBrowser
browser = RoboBrowser()
login_url = 'http://netacad.com/login'
browser.open(login_url)
form = browser.get_form(id='f')
form['username'].value = "username"
form['password'].value = "password"
browser.submit_form(form)

错误

The code that caused this warning is on line 10 of the file C:\Program Files (x86)\Wing IDE 101 6.0\bin\wingdb.py. To get rid of this warning, change code that looks like this:

 BeautifulSoup(YOUR_MARKUP})

to this:

 BeautifulSoup(YOUR_MARKUP, "html.parser")

  markup_type=markup_type))
Traceback (most recent call last):
  File "C:/Users/Leon/Desktop/retrieve.py", line 6, in <module>
    form['username'].value = "username"
builtins.TypeError: 'NoneType' object is not subscriptable

Answer 1

试试看：

browser = RoboBrowser(parser='html.parser')