Python正则表达式无法提取数字，只能提取文字

Question

我想要提取对应的数字，但是只能提出来文字，应该显示数字的地方变成了[ ]，然后它也没报错，实在不知道是哪里错了

Answer 1

rightlist内容中的括号是英文状态下的，题主正则用的中文状态下的当然无法匹配，而且应该使用非贪婪匹配

import re

s='''<center>[<font color="#0000FF"><b> 小麦 </b></font>]的营养素含量（指100克可食部食品中的含量）&nbsp;&nbsp;
    [进入食品百科查看--<a href='http://www.foodbk.com/wiki/%E5%B0%8F%E9%BA%A6' target='_blank'><font color="#0000FF"><b> 小麦 </b></font></a>的信息]</center>
    <div class="list"><div class="list_m">热量(千卡)</div>317</div><div class="list"><div class="list_m">硫胺素(毫克)</div>0.4</div><div class="list"><div class="list_m">钙(毫克)</div>34</div>
    <div class="list"><div class="list_m">蛋白质(克)</div>11.9</div><div class="list"><div class="list_m">核黄素(毫克)</div>0.1</div><div class="list"><div class="list_m">镁(毫克)</div>4</div>
    <div class="list"><div class="list_m">脂肪(克)</div>1.3</div><div class="list"><div class="list_m">烟酸(毫克)</div>4</div><div class="list"><div class="list_m">铁(毫克)</div>5.1</div>
    <div class="list"><div class="list_m">碳水化合物(克)</div>64.4</div><div class="list"><div class="list_m">维生素C(毫克)</div>0</div><div class="list"><div class="list_m">锰(毫克)</div>3.1</div>
    <div class="list"><div class="list_m">膳食纤维(克)</div>10.8</div><div class="list"><div class="list_m">维生素E(毫克)</div>1.82</div><div class="list"><div class="list_m">锌(毫克)</div>2.33</div>
    <div class="list"><div class="list_m">维生素A(微克)</div>0</div><div class="list"><div class="list_m">胆固醇(毫克)</div>0</div><div class="list"><div class="list_m">铜(毫克)</div>0.43</div>
    <div class="list"><div class="list_m">胡罗卜素(微克)</div>1.6</div><div class="list"><div class="list_m">钾(毫克)</div>289</div><div class="list"><div class="list_m">磷(毫克)</div>325</div>
    <div class="list"><div class="list_m">视黄醇当量(微克)</div>10</div><div class="list"><div class="list_m">钠(毫克)</div>6.8</div><div class="list"><div class="list_m">硒(微克)</div>4.05</div>'''

findDn=re.compile(r'<div class="list_m">蛋白质\(克\)</div>(.*?)</div>')
print(re.findall(findDn,s))