In Python, how do I find elements that contain a specific attribute?
I'm using Python 3.7. I want to locate all the elements in my HTML page that have an attribute, "data-permalink", regardless of what its value is, even if the value is empty. However, I'm confused about how to do this. I'm using the bs4 package and tried the following
soup = BeautifulSoup(html)
soup.findAll("data-permalink")
soup.findAll("a")
[<a href=" ... </a>]
soup.findAll("a.data-permalink")
The attribute is normally only found in anchor tags on my page, hence my unsuccessful, "a.data-permalink" attempt. I would like to return the elements that contain the attribute.
python python-3.x beautifulsoup html-parsing
asked Jan 1 at 23:26
DaveDave
1,08870204364
add a comment |
I'm using Python 3.7. I want to locate all the elements in my HTML page that have an attribute, "data-permalink", regardless of what its value is, even if the value is empty. However, I'm confused about how to do this. I'm using the bs4 package and tried the following
soup = BeautifulSoup(html)
soup.findAll("data-permalink")
soup.findAll("a")
[<a href=" ... </a>]
soup.findAll("a.data-permalink")
The attribute is normally only found in anchor tags on my page, hence my unsuccessful, "a.data-permalink" attempt. I would like to return the elements that contain the attribute.
python python-3.x beautifulsoup html-parsing
asked Jan 1 at 23:26
DaveDave
1,08870204364
1
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
2
True will match anything. If you prefer css-selectors:soup.select('a[data-permalink]').
– t.m.adam
Jan 2 at 0:39
add a comment |
I'm using Python 3.7. I want to locate all the elements in my HTML page that have an attribute, "data-permalink", regardless of what its value is, even if the value is empty. However, I'm confused about how to do this. I'm using the bs4 package and tried the following
soup = BeautifulSoup(html)
soup.findAll("data-permalink")
soup.findAll("a")
[<a href=" ... </a>]
soup.findAll("a.data-permalink")
The attribute is normally only found in anchor tags on my page, hence my unsuccessful, "a.data-permalink" attempt. I would like to return the elements that contain the attribute.
python python-3.x beautifulsoup html-parsing
asked Jan 1 at 23:26
DaveDave
1,08870204364
I'm using Python 3.7. I want to locate all the elements in my HTML page that have an attribute, "data-permalink", regardless of what its value is, even if the value is empty. However, I'm confused about how to do this. I'm using the bs4 package and tried the following
soup = BeautifulSoup(html)
soup.findAll("data-permalink")
soup.findAll("a")
[<a href=" ... </a>]
soup.findAll("a.data-permalink")
The attribute is normally only found in anchor tags on my page, hence my unsuccessful, "a.data-permalink" attempt. I would like to return the elements that contain the attribute.
python python-3.x beautifulsoup html-parsing
python python-3.x beautifulsoup html-parsing
asked Jan 1 at 23:26
DaveDave
1,08870204364
asked Jan 1 at 23:26
DaveDave
1,08870204364
asked Jan 1 at 23:26
DaveDave
1,08870204364
asked Jan 1 at 23:26
DaveDave
1,08870204364
asked Jan 1 at 23:26
DaveDave
1,08870204364
1,08870204364
1
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
2
True will match anything. If you prefer css-selectors:soup.select('a[data-permalink]').
– t.m.adam
Jan 2 at 0:39
add a comment |
1
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
2
True will match anything. If you prefer css-selectors:soup.select('a[data-permalink]').
– t.m.adam
Jan 2 at 0:39
1
1
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
2
2
True will match anything. If you prefer css-selectors:
soup.select('a[data-permalink]').– t.m.adam
Jan 2 at 0:39
True will match anything. If you prefer css-selectors:
soup.select('a[data-permalink]').– t.m.adam
Jan 2 at 0:39
add a comment |
1 Answer
1
active
oldest
votes
Your selector is invalid
soup.findAll("a.data-permalink")
it should be used for the method .select() but still it invalid because it mean select <a> with the class not the attribute.
to match everything use the * for select()
.select('*[data-permalink]')
or True if using findAll()
.findAll(True, attrs={'data-permalink' : True})
example
from bs4 import BeautifulSoup
html = '''<a data-permalink="a">link</a>
<b>bold</b>
<i data-permalink="i">italic</i>'''
soup= BeautifulSoup(html, 'html.parser')
permalink = soup.select('*[data-permalink]')
# or
# permalink = soup.findAll(True, attrs={'data-permalink' : True})
print(permalink)
Results, the <b> element is skipped
[<a data-permalink="a">link</a>, <i data-permalink="i">italic</i>]
answered Jan 2 at 6:34
ewwinkewwink
12k22339
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53999743%2fin-python-how-do-i-find-elements-that-contain-a-specific-attribute%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Your selector is invalid
soup.findAll("a.data-permalink")
it should be used for the method .select() but still it invalid because it mean select <a> with the class not the attribute.
to match everything use the * for select()
.select('*[data-permalink]')
or True if using findAll()
.findAll(True, attrs={'data-permalink' : True})
example
from bs4 import BeautifulSoup
html = '''<a data-permalink="a">link</a>
<b>bold</b>
<i data-permalink="i">italic</i>'''
soup= BeautifulSoup(html, 'html.parser')
permalink = soup.select('*[data-permalink]')
# or
# permalink = soup.findAll(True, attrs={'data-permalink' : True})
print(permalink)
Results, the <b> element is skipped
[<a data-permalink="a">link</a>, <i data-permalink="i">italic</i>]
answered Jan 2 at 6:34
ewwinkewwink
12k22339
add a comment |
Your selector is invalid
soup.findAll("a.data-permalink")
it should be used for the method .select() but still it invalid because it mean select <a> with the class not the attribute.
to match everything use the * for select()
.select('*[data-permalink]')
or True if using findAll()
.findAll(True, attrs={'data-permalink' : True})
example
from bs4 import BeautifulSoup
html = '''<a data-permalink="a">link</a>
<b>bold</b>
<i data-permalink="i">italic</i>'''
soup= BeautifulSoup(html, 'html.parser')
permalink = soup.select('*[data-permalink]')
# or
# permalink = soup.findAll(True, attrs={'data-permalink' : True})
print(permalink)
Results, the <b> element is skipped
[<a data-permalink="a">link</a>, <i data-permalink="i">italic</i>]
answered Jan 2 at 6:34
ewwinkewwink
12k22339
add a comment |
Your selector is invalid
soup.findAll("a.data-permalink")
it should be used for the method .select() but still it invalid because it mean select <a> with the class not the attribute.
to match everything use the * for select()
.select('*[data-permalink]')
or True if using findAll()
.findAll(True, attrs={'data-permalink' : True})
example
from bs4 import BeautifulSoup
html = '''<a data-permalink="a">link</a>
<b>bold</b>
<i data-permalink="i">italic</i>'''
soup= BeautifulSoup(html, 'html.parser')
permalink = soup.select('*[data-permalink]')
# or
# permalink = soup.findAll(True, attrs={'data-permalink' : True})
print(permalink)
Results, the <b> element is skipped
[<a data-permalink="a">link</a>, <i data-permalink="i">italic</i>]
answered Jan 2 at 6:34
ewwinkewwink
12k22339
Your selector is invalid
soup.findAll("a.data-permalink")
it should be used for the method .select() but still it invalid because it mean select <a> with the class not the attribute.
to match everything use the * for select()
.select('*[data-permalink]')
or True if using findAll()
.findAll(True, attrs={'data-permalink' : True})
example
from bs4 import BeautifulSoup
html = '''<a data-permalink="a">link</a>
<b>bold</b>
<i data-permalink="i">italic</i>'''
soup= BeautifulSoup(html, 'html.parser')
permalink = soup.select('*[data-permalink]')
# or
# permalink = soup.findAll(True, attrs={'data-permalink' : True})
print(permalink)
Results, the <b> element is skipped
[<a data-permalink="a">link</a>, <i data-permalink="i">italic</i>]
answered Jan 2 at 6:34
ewwinkewwink
12k22339
answered Jan 2 at 6:34
ewwinkewwink
12k22339
answered Jan 2 at 6:34
ewwinkewwink
12k22339
answered Jan 2 at 6:34
ewwinkewwink
12k22339
12k22339
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53999743%2fin-python-how-do-i-find-elements-that-contain-a-specific-attribute%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
1
This might be relevant to your question: stackoverflow.com/questions/31416858/…
– Jason Baumgartner
Jan 1 at 23:31
Thanks. Do you know if there's any way to make their example more generic? They have "soup.find_all("div", attrs={"limit":True})" and I was wondering if there is a way to substitute "True" for some kind of expression that means match anything.
– Dave
Jan 1 at 23:55
2
True will match anything. If you prefer css-selectors:
soup.select('a[data-permalink]').– t.m.adam
Jan 2 at 0:39