如何循环并点击相关项目答案

【问题标题】：How to loop through and click on relevant items如何循环并点击相关项目
【发布时间】：2016-02-09 22:43:43
【问题描述】：

下面我有四个单选按钮，每个按钮选择一个乘客。

<input checked="checked" name="passenger" id="passenger-0" data-passengerindex="0" type="radio">
    <input checked="checked" name="passenger" id="passenger-1" data-passengerindex="1" type="radio">
    <input checked="checked" name="passenger" id="passenger-2" data-passengerindex="2" type="radio">
    <input checked="checked" name="passenger" id="passenger-3" data-passengerindex="3" type="radio">

下面是一段代码，显示一排座位（第 6 排），一些婴儿座位 (class="seat infant") 和其他普通座位（普通座位是座位 noinfant - class="seat noinfant" 和座位 class="seat"。

    <td>
        <a href="#6A" title="Seat Suitable for Infants 6A" data-seat="6A" data-seatid="81374518" data-seatgroup="0" class="seat  infant" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6A</span>
        </a>
    </td><td>
        <a href="#6B" title="Seat Suitable for Infants 6B" data-seat="6B" data-seatid="81374519" data-seatgroup="0" class="seat  infant" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6B</span>
        </a>
    </td>
    <td>
        <a href="#6C" title="Seat Suitable for Infants 6C" data-seat="6C" data-seatid="81374520" data-seatgroup="0" class="seat  infant" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6C</span>
        </a>
    </td>
        <td class="aisle">6</td>
    <td>
        <a href="#6D" title="Seat Suitable for Infants 6D" data-seat="6D" data-seatid="81374522" data-seatgroup="1" class="seat  noinfant" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6D</span>
        </a>
    </td>
    <td>
        <a href="#6E" title="Seat Suitable for Infants 6E" data-seat="6E" data-seatid="81374523" data-seatgroup="1" class="seat" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6E</span>
        </a>
    </td>
    <td>
        <a href="#6F" title="Seat Suitable for Infants 6F" data-seat="6F" data-seatid="81374524" data-seatgroup="1" class="seat  infant" data-personid="" data-infantseat="True">
            <span>Seat Suitable for Infants 6F</span>
        </a>
    </td>
</tr>

选择座位后，会发生以下情况：

婴儿座椅的班级从 class="seat infant" 更改为 class="seat infant reserved selected
普通座位 - class="seat noinfant" 至 class="seat noinfant reserved selected 或 class="seat" 至 class="seat reserved selected

以下是我需要帮助实施的内容：

从第 1 行开始并继续

对于前两名乘客，请单击下一个可用的婴儿座位（每个婴儿座位一名乘客）
对于最后两名乘客，单击从第 1 行开始的任意座位以后

我们不需要实际选择乘客，因为他们是在选择座位后自动选择的，并且在页面加载时已经选择了第一位乘客。

有没有人因为我只使用了 4 天的 Python，所以几乎没有高级的知道如何实现上述内容？

【问题讨论】：

标签： python python-2.7 selenium selenium-webdriver

【解决方案1】：

这个想法是：

根据乘客是否有婴儿（data-hasinfant 属性），决定选择哪个座位
使用带有 not() 的 CSS 类选择器来获得未选择和未保留的座位

示例实现：

for passenger in driver.find_elements_by_css_selector("ol.passengerlist li[data-personid]"):
    passenger.click()

    has_infant = passenger.get_attribute("data-hasinfant")

    # choose seats
    if has_infant:
        # select a non-selected infant seat
        seat = driver.find_element_by_css_selector(".planebody a.seat.infant:not(.reserved):not(.selected)")
    else:
        # select a non-reserved non-selected seat
        seat = driver.find_element_by_css_selector(".planebody a.seat:not(.reserved):not(.selected)")

    print("Passenger: %s, choosing seat: %s" % (passenger.text.strip(), seat.get_attribute("data-seat")))
    seat.click()

【讨论】：