object of type 'Response' has no len()这是什么原因？

angel725

Traceback (most recent call last):
  File "C:/Users/ty/PycharmProjects/untitled3/src/Reptile.py", line 7, in <module>
    soup=BeautifulSoup(web,'lxml')
  File "E:\Python\Python35-32\lib\site-packages\beautifulsoup4-4.5.1-py3.5.egg\bs4\__init__.py", line 192, in __init__
TypeError: object of type 'Response' has no len()