写python时一直提示'\w'. String constant might be missing an r prefix

Question

代码

class Spider():

    url = 'https://www.huya.com/g/lol'

    root_pattern = '<div class="txt">[\s\S]*?</div>'

错误是Anomalous backslash in string: '\s'. String constant might be missing an r prefix.

Answer 1

报错信息都告知你了，若想输出字符串常量\s,请用r前缀，即诸如r'\s'这样的形式