If I have a snippet of html like this:
<p><br><p>
<li>stuff</li>
<li>stuff</li>
Is there a way to clean this and add the missing ul/ol tags using beautiful soup, or another python library?
I tried soup.prettify() but it left as is.
It doesn't seem like there's a built-in method which wraps groups of li elements into an ul. However, you can simply loop over the li elements, identify the first element of each li group and wrap it in ul tags. The next elements in the group are appended to the previously created ul:
from bs4 import BeautifulSoup
soup = BeautifulSoup(html, "html.parser")
ulgroup = 0
uls = []
for li in soup.findAll('li'):
previous_element = li.findPrevious()
# if <li> already wrapped in <ul>, do nothing
if previous_element and previous_element.name == 'ul':
continue
# if <li> is the first element of a <li> group, wrap it in a new <ul>
if not previous_element or previous_element.name != 'li':
ulgroup += 1
ul = soup.new_tag("ul")
li.wrap(ul)
uls.append(ul)
# append rest of <li> group to previously created <ul>
elif ulgroup > 0:
uls[ulgroup-1].append(li)
print(soup.prettify())
For example, the following input:
html = '''
<p><br><p>
<li>stuff1</li>
<li>stuff2</li>
<div></div>
<li>stuff3</li>
<li>stuff4</li>
<li>stuff5</li>
'''
outputs:
<p>
<br/>
<p>
<ul>
<li>
stuff1
</li>
<li>
stuff2
</li>
</ul>
<div>
</div>
<ul>
<li>
stuff3
</li>
<li>
stuff4
</li>
<li>
stuff5
</li>
</ul>
</p>
</p>
Demo: https://repl.it/#glhr/55619920-fixing-uls
First, you have to decide which parser you are going to use. Different parsers treat malformed html differently.
The following BeautifulSoup methods will help you accomplish what you require
new_tag() - create a new ul tag
append() - To append the newly created ul tag somewhere in the soup tree.
extract() - To extract the li tags one by one (which we can append to the ul tag)
decompose() - To remove any unwanted tags from the tree. Which may be formed as a result of the parser's interpretation of the malformed html.
My Solution
Let's create a soup object using html5lib parser and see what we get
from bs4 import BeautifulSoup
html="""
<p><br><p>
<li>stuff</li>
<li>stuff</li>
"""
soup=BeautifulSoup(html,'html5lib')
print(soup)
Outputs:
<html><head></head><body><p><br/></p><p>
</p><li>stuff</li>
<li>stuff</li>
</body></html>
The next step may vary according to what you want to accomplish. I want to remove the second empty p. Add a new ul tag and get all the li tags inside it.
from bs4 import BeautifulSoup
html="""
<p><br><p>
<li>stuff</li>
<li>stuff</li>
"""
soup=BeautifulSoup(html,'html5lib')
second_p=soup.find_all('p')[1]
second_p.decompose()
ul_tag=soup.new_tag('ul')
soup.find('body').append(ul_tag)
for li_tag in soup.find_all('li'):
ul_tag.append(li_tag.extract())
print(soup.prettify())
Outputs:
<html>
<head>
</head>
<body>
<p>
<br/>
</p>
<ul>
<li>
stuff
</li>
<li>
stuff
</li>
</ul>
</body>
</html>
Related
Picture contains HTML code for the situation
case 1:
<li>
<a> some text: </a><strong> 'identifier:''random words' </strong>
</li>
case 2:
<li>
<a> some text: </a>
</li>
I want to scrape values for identifiers if it's present, else I want to put an empty string if there is no identifier in that particular case.
I am using scrapy or you can help me with BeautifulSoup as well and will really appreciate your help
It's a little bit unclear what do you want exactly, because your screenshot is little bit different than your example in your question. I suppose you want to search text "some text:" and then get next value inside <strong> (or empty string if there isn't any):
from bs4 import BeautifulSoup
txt = '''
<li>
<a> some text: </a><strong> 'identifier:''random words' </strong>
</li>
<li>
<a> some text: </a>
</li>
'''
soup = BeautifulSoup(txt, 'html.parser')
for t in soup.find_all(lambda t: t.contents[0].strip() == 'some text:'):
identifier = t.parent.find('strong')
identifier = identifier.get_text(strip=True) if identifier else ''
print('Found:', identifier)
Prints:
Found: 'identifier:''random words'
Found:
I try to get the attribute of the parent element:
<div class="detailMS__incidentRow incidentRow--away odd">
<div class="time-box">45'</div>
<div class="icon-box soccer-ball-own"><span class="icon soccer-ball-own"> </span></div>
<span class=" note-name">(Autogoal)</span><span class="participant-name">
Reynaldo
</span>
</div>
span_autogoal = soup.find('span', class_='note-name')
print(span_autogoal)
print(span_autogoal.find_parent('div')['class'])
# print(span_autogoal.find_parent('div').get('class')
Output:
<span class="note-name">(Autogoal)</span>
['detailMS__incidentRow', 'incidentRow--away', 'odd']
I know i can do something like this:
print(' '.join(span_autogoal.find_parent('div')['class']))
But i want to know why this is happening and is it possible to do this more correctly?
Above answer is correct however if you want get mutli attribute value return as string try use xml parser after get the parent element.
from bs4 import BeautifulSoup
data='''<div class="detailMS__incidentRow incidentRow--away odd">
<div class="time-box">45'</div>
<div class="icon-box soccer-ball-own"><span class="icon soccer-ball-own"> </span></div>
<span class=" note-name">(Autogoal)</span><span class="participant-name">
Reynaldo
</span>
</div>'''
soup=BeautifulSoup(data,'lxml')
span_autogoal = soup.find('span', class_='note-name')
print(span_autogoal)
parentdiv=span_autogoal.find_parent('div')
data=str(parentdiv)
soup=BeautifulSoup(data,'xml')
print(soup.div['class'])
Output on console:
<span class="note-name">(Autogoal)</span>
detailMS__incidentRow incidentRow--away odd
According to the BeautifulSoup documentation:
HTML 4 defines a few attributes that can have multiple values. HTML 5
removes a couple of them, but defines a few more. The most common
multi-valued attribute is class (that is, a tag can have more than one
CSS class). Others include rel, rev, accept-charset, headers, and
accesskey. Beautiful Soup presents the value(s) of a multi-valued
attribute as a list:
css_soup = BeautifulSoup('<p class="body"></p>') css_soup.p['class']
# ["body"]
css_soup = BeautifulSoup('<p class="body strikeout"></p>')
css_soup.p['class']
# ["body", "strikeout"]
So in your case in <div class="detailMS__incidentRow incidentRow--away odd"> a class attribute is multi-valued.
That's why span_autogoal.find_parent('div')['class'] gives you list as an output.
I am trying to extract div tags and header tags when they are together.
ex:
<h3>header</h3>
<div>some text here
<ul>
<li>list</li>
<li>list</li>
<li>list</li>
</ul>
</div>
I tried solution provided in below link.
here the header tag inside div tag...
but my requirement is div tag after header tag.
Scraping text in h3 and div tags using beautifulSoup, Python
also i tried something like this but not worked
soup = bs4.BeautifulSoup(page, 'lxml')
found = soup..find_all({"h3", "div"})
I need content from H3 tag and all the content inside div tag where ever these two combination exists.
You could use CSS selector h3:has(+div) - this will select all <h3> which have div immediately after it:
data = '''<h3>header</h3>
<div>some text here
<ul>
<li>list</li>
<li>list</li>
<li>list</li>
</ul>
</div>
<h3>This header is not selected</h3>
<p>Beacause this is P tag, not DIV</p>
'''
from bs4 import BeautifulSoup
soup = BeautifulSoup(data, 'html.parser')
for h3 in soup.select('h3:has(+div)'):
print('Header:')
print(h3.text)
print('Next <div>:')
print(h3.find_next_sibling('div').get_text(separator=",", strip=True))
Prints:
Header:
header
Next <div>:
some text here,list,list,list
Further reading:
CSS Selectors reference
I am only new to python and i am having trouble getting the text between the tags, here is the html of the full table.
<div id="menu">
<h4 style="display:none">Horse Photo</h4>
<ul style="margin-top:5px;border-radius:6px">
<li style="padding:0">
<img src="/images/unknown_horse.png" style="width:298px;margin-bottom:-3px;border-radius:5px;">
</li>
</ul>
<h4>Horse Profile</h4>
<ul>
<li>Age<span>3yo</span></li>
<li>Foaled<span>17/11/2014</span></li>
<li>Country<span>New Zealand</span></li>
<li>Location<span>Kembla Grange</span></li>
<li>Sex<span>Filly</span></li>
<li>Colour<span>Grey</span></li>
<li>Sire<span>Mastercraftsman</span></li>
<li>Dam<span>In Essence</span></li>
<li>Trainer
<span>
R & L Price
</span>
</li>
<li>Earnings<span>$19,795</span></li>
</ul>
<h4>Owners</h4>
<ul>
<li style="font:normal 12px 'Tahoma">Bell View Park Stud (Mgr: A P Mackrell)</li>
</ul>
</div>
For parsing HTML use beautifulsoup package. That way you can select elements of your html document with ease. To print all text within <span> tags, you can use this example:
data = """
<div id="menu">
<h4 style="display:none">Horse Photo</h4>
<ul style="margin-top:5px;border-radius:6px">
<li style="padding:0">
<img src="/images/unknown_horse.png" style="width:298px;margin-bottom:-3px;border-radius:5px;">
</li>
</ul>
<h4>Horse Profile</h4>
<ul>
<li>Age<span>3yo</span></li>
<li>Foaled<span>17/11/2014</span></li>
<li>Country<span>New Zealand</span></li>
<li>Location<span>Kembla Grange</span></li>
<li>Sex<span>Filly</span></li>
<li>Colour<span>Grey</span></li>
<li>Sire<span>Mastercraftsman</span></li>
<li>Dam<span>In Essence</span></li>
<li>Trainer
<span>
R & L Price
</span>
</li>
<li>Earnings<span>$19,795</span></li>
</ul>
<h4>Owners</h4>
<ul>
<li style="font:normal 12px 'Tahoma">Bell View Park Stud (Mgr: A P Mackrell)</li>
</ul>
</div>
"""
from bs4 import BeautifulSoup
soup = BeautifulSoup(data, 'lxml')
for li in soup.select('span'):
if li.text.strip() == '':
continue
print(li.text)
Will print:
3yo
17/11/2014
New Zealand
Kembla Grange
Filly
Grey
Mastercraftsman
In Essence
R & L Price
$19,795
There are plenty of options to work with HTML/XML. I prefer parsel package. You can install it to your environment with the following command:
$ pip install parsel
After that you can use it like this:
from parsel import Selector
sel = Selector(html)
sel.css('ul li::text').extract()
# ['Age',
# 'Foaled',
# 'Country',
# 'Location',
# 'Sex',
# 'Colour',
# 'Sire',
# 'Dam',
# 'Trainer',
# 'Earnings',
# 'Bell View Park Stud (Mgr: A P Mackrell)']
More detailed description can be found here.
I want to extract the text within list element inside a comment without the list tags.But I can't do it with the code below.
from bs4 import BeautifulSoup, Comment
html = """
<html>
<body>
<!--
<ul>
<li>10</li>
<li>20</li>
<li>30</li>
</ul>
-->
</body>
</html>
"""
soup = BeautifulSoup(html, 'html.parser')
for numbers in soup.findAll(text=lambda text:isinstance(text, Comment)):
print(numbers.extract())
Result is:
<ul>
<li>10</li>
<li>20</li>
<li>30</li>
</ul>
Desired result :
10
20
30
Try the below approach. It will fetch you the result you wish to get.
from bs4 import BeautifulSoup, Comment
html = """
<html>
<body>
<!--
<ul>
<li>10</li>
<li>20</li>
<li>30</li>
</ul>
-->
</body>
</html>
"""
soup = BeautifulSoup(html, 'html.parser')
for item in soup.find_all(text=lambda text:isinstance(text, Comment)):
data = BeautifulSoup(item,"html.parser")
for number in data.find_all("li"):
print(number.text)
Output:
10
20
30
Look for all "li" and print just the text.
for tag in soup.find_all("li"):
print(tag.text))