HTML源码：

<!DOCTYPE html>
<div lang="en"></div></div>
<head>
    <meta charset="UTF-8">
    <title>多选文本框</title>
</head>
<body>
        <from>
                <input type="radio" name="fruit" value="berry" />草莓</input>
                <br/>
                <input type="radio" name="fruit" value="watermelon" />西瓜</input>
                <br/>
                <input type="radio" name="fruit" value="orange" />橙子</input>
        </from>
</body>
</html>

python+selenium源码：

from selenium import webdriver
import unittest
import time

class LianXi_test(unittest.TestCase):

    def setUp(self):
        self.driver = webdriver.Chrome()
        self.url = r"E:\python\demo\Xpath\demo1.html"
        self.driver.implicitly_wait(10)
        self.driver.maximize_window()

    def test_get(self):
        # ger自己的html网页
        self.driver.get(self.url)
        # 使用Xpath定位获取Value属性值为'berry'的input元素对象，也就是草莓选项
        i = self.driver.find_element_by_xpath("//input[@value='berry']")
        i.click()
        time.sleep(1)
        self.assertTrue(i.is_selected(), "草莓单选框未被选中")

        if i.is_selected():        # 果草莓单选项被成功选中,重新选择西瓜
            o = self.driver.find_element_by_xpath("//input[@value='watermelon']")
            o.click()
            time.sleep(1)
        #    选择西瓜后，断言草莓选项是否处于未选中状态
            self.assertFalse(i.is_selected())

        p = self.driver.find_elements_by_xpath("//input[@name='fruit']")

        for u in p:
            time.sleep(1)
            if u.get_attribute("value") == "orange":
                time.sleep(1)
                if not u.is_selected():
                    u.click()
                    time.sleep(1)
                    self.assertEqual(u.get_attribute("value"), "orange")

    def tearDown(self):
        self.driver.quit()


if __name__ == "__main__":
    unittest.main()