[英]convert a string of 1000 characters to a list which satisfies a condition such that each list item is <256 and ends with a full stop '.' in python
[英]Finding an item which ends with jpg in a list
我想在以jpg
, png
或类似图像类型结尾的列表中找到项目。
可以说这是我的清单:
['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']
我想找到以jpg
或png
结尾的URL。
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)
您可以使用列表 str.endswith
和str.endswith
:
images = [x for x in href_links if x.endswith(('jpg', 'png'))]
您可以使用内置的字符串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']
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