如何使用selenium从span获取文本 或者遍历取出7-13的方法呢

<tr class="curr" _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">7</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">8</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">9</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">10</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">11</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">12</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">13</span>
    </div>
</tr>    

用正则 /_nk="8\/KP5a">(\d+)</g

如果格式都是如此的话，可以用正则表达式

        String str = ("<tr class=\"curr\" _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">7</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">8</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">9</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">10</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">11</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">12</span>\n" +
                "    </div>\n" +
                "</tr>    \n" +
                "<tr _nk=\"8/KPc6\">\n" +
                "    <div _nk=\"8/KP3b\">\n" +
                "        <span _nk=\"8/KP5a\">13</span>\n" +
                "    </div>\n" +
                "</tr> ");

        Pattern pattern = Pattern.compile(">[1-9]\\d*</span>");

        Matcher m = pattern.matcher(str);

        while (m.find()) {
            System.out.println(m.group(0).replace("</span>","").replace(">",""));
        }

from bs4 import BeautifulSoup
#用selenium获取页面代码，用BeautifulSoup解析较容易得到结果。
page_source='''<tr class="curr" _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">7</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">8</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">9</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">10</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">11</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">12</span>
    </div>
</tr>    
<tr _nk="8/KPc6">
    <div _nk="8/KP3b">
        <span _nk="8/KP5a">13</span>
    </div>
</tr>'''
soup=BeautifulSoup(page_source,'html.parser')
result=[x.text for x in soup.select('tr div span')]
print(result)