关于bs4的问题

愤怒的大头菇

出现这样的情况怎么解决
soup = BeautifulSoup(html)

Warning (from warnings module):
  File "D:\Python34\lib\site-packages\bs4\__init__.py", line 181
    markup_type=markup_type))
UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("html.parser"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.

The code that caused this warning is on line 1 of the file <string>. To get rid of this warning, change code that looks like this:

BeautifulSoup([your markup])

to this:

BeautifulSoup([your markup], "html.parser")
然后在一次soup=BeautifulSoup(html)才可以，怎样改能一次就可以

冬菇茶

按照警告的提醒，改成“BeautifulSoup(html, "html.parser") ”即可