#coding:utf-8
import re


EachUrlOuter='<span class="page-ch">共45页</span>'
a=r'(<span class="page-ch">)(\S+\d)'
c=re.match(a,EachUrlOuter).group(2)
print(c)


fea614e94c2f2e982ee42a17b9714b4b0bb86cf6
<mask token>

<mask token>
print(c)

<mask token>
EachUrlOuter = '<span class="page-ch">共45页</span>'
a = '(<span class="page-ch">)(\\S+\\d)'
c = re.match(a, EachUrlOuter).group(2)
print(c)

import re
EachUrlOuter = '<span class="page-ch">共45页</span>'
a = '(<span class="page-ch">)(\\S+\\d)'
c = re.match(a, EachUrlOuter).group(2)
print(c)

#coding:utf-8
import re


EachUrlOuter='<span class="page-ch">共45页</span>'
a=r'(<span class="page-ch">)(\S+\d)'
c=re.match(a,EachUrlOuter).group(2)
print(c)

