python - 如何从 BeautifulSoup 中的 span 标签获取文本

Question

我有这样的链接

<div class="systemRequirementsMainBox">
<div class="systemRequirementsRamContent">
<span title="000 Plus Minimum RAM Requirement">1 GB</span> </div>

我正在尝试从那里获取 1 GB。我试过了

tt  = [a['title'] for a in soup.select(".systemRequirementsRamContent span")]
for ram in tt:
    if "RAM" in ram.split():
        print (soup.string)

它输出None。

我尝试了 a['text'] 但它给了我 KeyError。我该如何解决这个问题，我的错误是什么？

Answer 1

您可以使用 css 选择器，使用标题文本拉出您想要的跨度:

soup = BeautifulSoup("""<div class="systemRequirementsMainBox">
<div class="systemRequirementsRamContent">
<span title="000 Plus Minimum RAM Requirement">1 GB</span> </div>""", "xml")

print(soup.select_one("span[title*=RAM]").text)

即找到title属性包含RAM的span，相当于在python中说，if "RAM "在 span["title"] 中。

或者使用 find 和 re.compile

import re
print(soup.find("span", title=re.compile("RAM")).text)

获取所有数据:

from bs4 import BeautifulSoup 
r  = requests.get("http://www.game-debate.com/games/index.php?g_id=21580&game=000%20Plus").content

soup = BeautifulSoup(r,"lxml")
cont = soup.select_one("div.systemRequirementsRamContent")
ram = cont.select_one("span")
print(ram["title"], ram.text)
for span in soup.select("div.systemRequirementsSmallerBox.sysReqGameSmallBox span"):
        print(span["title"],span.text)

这会给你:

000 Plus Minimum RAM Requirement 1 GB
000 Plus Minimum Operating System Requirement Win Xp 32
000 Plus Minimum Direct X Requirement DX 9
000 Plus Minimum Hard Disk Drive Space Requirement 500 MB
000 Plus GD Adjusted Operating System Requirement Win Xp 32
000 Plus GD Adjusted Direct X Requirement DX 9
000 Plus GD Adjusted Hard Disk Drive Space Requirement 500 MB
000 Plus Recommended Operating System Requirement Win Xp 32
000 Plus Recommended Hard Disk Drive Space Requirement 500 MB