python - 如何循环浏览并点击相关项目

Question

下面有四个单选按钮，每个按钮都选择一名乘客。

<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，显示了一排座位(第 6 排)，一些婴儿座位 (class="seat Baby") 和其他普通座位(普通座位是 noinfant 座位) - 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:

• 婴儿座椅的舱位从 class="seat Baby" 更改为 class="seat Babyserved selected
• 普通座位 - class="seat noinfant" 至 class="seat noinfantserved selected 或 class="seat" 至 class="预留座位已选择

以下是我需要帮助实现的内容:

从第 1 行开始并继续

• 对于前两名乘客，请点击下一个可用的婴儿 座位(每个婴儿座椅一名乘客)
• 对于最后两名乘客，请点击从第 1 排开始的任意座位 从此

我们不需要实际选择乘客，因为他们在选择座位后会自动选择，并且在加载页面时已经选择了第一位乘客。

有没有人像我一样只使用了 4 天 Python，所以根本不知道如何实现上述内容？

Answer 1

这个想法是:

• 根据乘客是否携带婴儿(data-hasinfant 属性)，决定选择哪个座位
• 使用 CSS 类选择器和 not() 来获取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()