Python使用Beauty soup从html中提取属性

我试图使用Python中的

BeautifulSoup

库从html脚本中提取jpg图像名称。在url中，无论您在哪里找到

srcset

，它总是以jpg文件名进行。我希望以这种方式提取所有jpg文件，但是每当我运行以下代码时，它就会打印出

None

。然而，在url中，srcset之后总是有一个jpg文件名。例如，“

srcset=”https://img.shopstyle-cdn.com/pim/31/94/3194ec1ca5e3a56cb83f708533b9084d_best.jpg“

”可以在html中找到

import urllib2 
html = urllib2.urlopen("https://www.shopstyle.com/p/prada-notch-lapel-fitted-blazer/645742403").read()

from bs4 import BeautifulSoup
soup = BeautifulSoup(html, 'html.parser')

print soup.find(attrs= {"img":"srcset"})

试试这个：

soup.find('img')['srcset']
'https://img.shopstyle-cdn.com/pim/31/94/3194ec1ca5e3a56cb83f708533b9084d_best.jpg'

试试这个：

soup.find('img')['srcset']
'https://img.shopstyle-cdn.com/pim/31/94/3194ec1ca5e3a56cb83f708533b9084d_best.jpg'

---

要从

srcset

查找所有URL，可以执行以下操作：

import urllib2 
html = urllib2.urlopen("https://www.shopstyle.com/p/prada-notch-lapel-fitted-blazer/645742403").read()

from bs4 import BeautifulSoup
soup = BeautifulSoup(html, 'html.parser')

for el in soup.findAll('img', attrs = {'srcset' : True}):
    print el['srcset']

---

您的查询返回

None

，因为参数

attrs

需要一个属性为键、筛选器为值的字典。请参阅

中的说明，从

srcset

中查找所有URL，您可以执行以下操作：

import urllib2 
html = urllib2.urlopen("https://www.shopstyle.com/p/prada-notch-lapel-fitted-blazer/645742403").read()

from bs4 import BeautifulSoup
soup = BeautifulSoup(html, 'html.parser')

for el in soup.findAll('img', attrs = {'srcset' : True}):
    print el['srcset']

您的查询返回

None

，因为参数

attrs

需要一个属性为键、筛选器为值的字典。请看下面的解释

我想提取所有的jpg文件

输出：

['https://img.shopstyle-cdn.com/pim/31/94/3194ec1ca5e3a56cb83f708533b9084d_best.jpg', 'https://img.shopstyle-cdn.com/pim/16/c3/16c3e46d3547d6404ba29b61b8f229fd_best.jpg', 'https://img.shopstyle-cdn.com/pim/65/e6/65e6d0e3c0160f0aca361934b999f0c9_best.jpg', 'https://img.shopstyle-cdn.com/sim/31/94/3194ec1ca5e3a56cb83f708533b9084d/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/sim/16/c3/16c3e46d3547d6404ba29b61b8f229fd/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/sim/65/e6/65e6d0e3c0160f0aca361934b999f0c9/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/pim/73/76/737689fa284d6640f7619e5f2f3558a5_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/2c/b0/2cb0acb147bd20df78bc482d66d7218b_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/5c/20/5c20824543749df684f3264c5e976e8c_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/48/b8/48b81f60d61e5c23cdfa343940e43ce9_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/ff/08/ff081818581b0363d4c0ec02c2cba5d4_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/86/0a/860ae7abdde0bf40046d53668abbe126_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/2f/5c/2f5c78d017052b14fd2db0d886a2a326_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/49/d5/49d5de5b62e6ddc0864afee987dd5e67_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/50/04/5004bf25e97ac0e4564d8a219a3b34b4_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/a8/76/a876ac6696e140f34e4cf82b5dbcaadf_xlarge.jpg']

我想提取所有的jpg文件

输出：

['https://img.shopstyle-cdn.com/pim/31/94/3194ec1ca5e3a56cb83f708533b9084d_best.jpg', 'https://img.shopstyle-cdn.com/pim/16/c3/16c3e46d3547d6404ba29b61b8f229fd_best.jpg', 'https://img.shopstyle-cdn.com/pim/65/e6/65e6d0e3c0160f0aca361934b999f0c9_best.jpg', 'https://img.shopstyle-cdn.com/sim/31/94/3194ec1ca5e3a56cb83f708533b9084d/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/sim/16/c3/16c3e46d3547d6404ba29b61b8f229fd/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/sim/65/e6/65e6d0e3c0160f0aca361934b999f0c9/prada-notch-lapel-fitted-blazer.jpg', 'https://img.shopstyle-cdn.com/pim/73/76/737689fa284d6640f7619e5f2f3558a5_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/2c/b0/2cb0acb147bd20df78bc482d66d7218b_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/5c/20/5c20824543749df684f3264c5e976e8c_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/48/b8/48b81f60d61e5c23cdfa343940e43ce9_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/ff/08/ff081818581b0363d4c0ec02c2cba5d4_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/86/0a/860ae7abdde0bf40046d53668abbe126_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/2f/5c/2f5c78d017052b14fd2db0d886a2a326_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/49/d5/49d5de5b62e6ddc0864afee987dd5e67_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/50/04/5004bf25e97ac0e4564d8a219a3b34b4_xlarge.jpg', 'https://img.shopstyle-cdn.com/pim/a8/76/a876ac6696e140f34e4cf82b5dbcaadf_xlarge.jpg']

---

你能给出能找到图像的整个标记吗？希望它有助于soup.find（'img'，attrs={'srcset'：True}）你能给出能找到图像的整个标记吗？希望它有助于soup.find（'img'，attrs={'srcset'：True}）