Html BeautifulSoup。上一次搜索返回无

下面是示例HTML

<tr id="gift1" class="gift"><td>
Vegetable Basket
</td><td>
This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
<span class="excitingNote">Now with super-colorful bell peppers!</span>
</td><td>
$15.00
</td><td>
<img src="../img/gifts/img1.jpg">
</td></tr>

bsObj.find（“img”，“src”：./img/gifts/img1.jpg”）。父级

返回：

<td>
<img src="../img/gifts/img1.jpg">
</td>

但是

bsObj.find（“img”，“src”：./img/gives/img1.jpg”）.parent.previous\u sibling

始终返回None

---

这不应该返回价格标签吗？

首先，你有一个打字错误-

以前的兄弟姐妹

vs

以前的兄弟姐妹

：

>>> from bs4 import BeautifulSoup
>>> 
>>> data = """<tr id="gift1" class="gift"><td>
... Vegetable Basket
... </td><td>
... This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
... <span class="excitingNote">Now with super-colorful bell peppers!</span>
... </td><td>
... $15.00
... </td><td>
... <img src="../img/gifts/img1.jpg">
... </td></tr>"""
>>> 
>>> soup = BeautifulSoup(data, "html.parser")
>>> 
>>> image_url = "../img/gifts/img1.jpg"
>>> 
>>> image = soup.find("img", src=image_url)
>>> price = image.parent.previous_sibling.get_text(strip=True)
>>> print(price)
$15.00

---

哦，是打字错误。它没有返回任何结果。所以我从来没有想过拼写错误。泰

>>> from bs4 import BeautifulSoup
>>> 
>>> data = """<tr id="gift1" class="gift"><td>
... Vegetable Basket
... </td><td>
... This vegetable basket is the perfect gift for your health conscious (or overweight) friends!
... <span class="excitingNote">Now with super-colorful bell peppers!</span>
... </td><td>
... $15.00
... </td><td>
... <img src="../img/gifts/img1.jpg">
... </td></tr>"""
>>> 
>>> soup = BeautifulSoup(data, "html.parser")
>>> 
>>> image_url = "../img/gifts/img1.jpg"
>>> 
>>> image = soup.find("img", src=image_url)
>>> price = image.parent.previous_sibling.get_text(strip=True)
>>> print(price)
$15.00

>>> price = image.find_previous(text=lambda text: text and text.strip().startswith("$")).strip()
>>> print(price)
$15.00