关于#爬虫#的问题："f12":"831152","f13":0,"f14":"N昆工","f15":7.59,"f16":7.3,

f15的正则表达式该怎么写？

"f12":"831152","f13":0,"f14":"N昆工","f15":7.59,"f16":7.3,

import re

str_ =' "f12":"831152","f13":0,"f14":"N昆工","f15":7.59,"f16":7.3,'
f15 = re.search('"f15":(.*?),', str_).group(1)
print(f15)