在列表中查找以 jpg 结尾的项目

Question

我想在以 jpg、png 或类似图像类型结尾的列表中查找项目。

假设这是我的清单：

['http://www.ragalahari.com/index.aspx', 'http://www.ragalahari.com/index.aspx', 'http://www.ragalahari.com/news.aspx', 'http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock1t.jpg', 'http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock2t.jpg', 'http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock3t.jpg', 'http://www.ragalahari.com/images/facebookicon.png', 'http://www.ragalahari.com/images/searchicon.png']

我想查找以 jpg 或 png 结尾的 URLS。

我的代码到这里：

href_links = []
for a in soup.find_all('a', href=True):

    href = a.get('href')
    href = urljoin(link1, href)
    href_links.append(href)

Answer 1

您可以使用 list comprehension and str.endswith:

images = [x for x in href_links if x.endswith(('jpg', 'png'))]

Answer 2

您可以使用内置字符串 endswith 方法。

your_list = ["http://www.ragalahari.com/index.aspx",
"http://www.ragalahari.com/index.aspx",
"http://www.ragalahari.com/news.aspx",
"http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock1t.jpg",
"http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock2t.jpg",
"http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock3t.jpg",
"http://www.ragalahari.com/images/facebookicon.png",
"http://www.ragalahari.com/images/searchicon.png"]

img_links = []
for a in your_list:
    if a.endswith('png') or a.endswith('jpg'):
        img_links.append(a)

print img_links

结果 =

['http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock1t.jpg', 'http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock2t.jpg', 'http://imgcdn.raagalahari.com/feb2015/photosessions/shraddha-das-in-long-black-frock/shraddha-das-in-long-black-frock3t.jpg', 'http://www.ragalahari.com/images/facebookicon.png', 'http://www.ragalahari.com/images/searchicon.png']

在列表中查找以 jpg 结尾的项目

Finding an item which ends with jpg in a list

python

element

list