How can I find the first string which comes after a certain string using BeautfulSoup?
I have this text within an HTML file:
<tr>
<th scope="row">Continent:</th>
<td>North America</td>
</tr>
<tr>
I'd like to fetch out of it "North America" by getting the first string which comes after 'Continent:' string.
How can I do that?
BTW, I found another way to get it, but I'm looking for a more simple way:
continent_tag = soup.find('th', string='Continent:')
print continent_tag.parent.contents[3].contents[0]
Thanks,
Moty
Since the elements are siblings, another option would be to use the .find_next_sibling() method in order to select the adjacent td sibling element:
print(soup.find('th', string='Continent:').find_next_sibling('td').text)
# North America
Related
So basically what I need help in is:
I want to search for BBXXCODE with selenium-3.141.0, and Python 3.8.5.
I'm using driver.find_element_by_xpath("//*[contains(text(),'BBXXCODE')]" which is working as expected. But I need to somehow extract the id of the <tr> tag on top, because I want to use driver.find_element_by_xpath('//*[#id="tr9"]/td[2]/h1').click() to click on the I need to select this text.
Is there a way to do this or should I stay searching via the I need to select this text instead of the code?
This is the code piece:
<tr id='tr9'>
<td></td>
<td role='gridcell'>
<span class='link'>I need to select this</span>
</td>
<td role='gridcell'>
BBXXCODE
</td>
</tr>
I hope it is mostly clear, if not, feel free to tell me I'll try to add more details to it.
Thanks in advance
Rather than get the ID and then find the other element (in two steps), I would suggest, if possible, that you just get it in one step. You can use the XPath below to find the desired SPAN based on the location of the BBXXCODE.
//tr[./td[contains(text(),'BBXXCODE')]]/td/span
To extract the id of the <tr> tag with respect to the text BBXXCODE you can use either of the following Locator Strategies:
Using xpath and parent:
tr_id = driver.find_element_by_xpath("//td[contains(., 'BBXXCODE')]//parent::tr[1]").get_attribute("id")
Using xpath and ancestor:
tr_id = driver.find_element_by_xpath("//td[contains(., 'BBXXCODE')]//ancestor::tr[1]").get_attribute("id")
I'm new to scrapy and have been struggling for this problem for hours.
I need to scrape a page, with its source somehow looks like this:
<tr class="odd">
<td class="pfama_PF02816">Pfam</td>
<td>Alpha_kinase</td>
<td>1389</td>
<td>1590</td>
<td class="sh" style="display: none">21.30</td>
</tr>
I need to get the information of the tr.odd tag, if and only if the a tag has "Alpha_kinase" value
I can get all of those content (including "Alpha_kinase", 1389, 1590 and many other values) and then process the output to get "Alpha_kinase" only, but this approach will be significantly fragile and ugly. Currently I have to do that way:
positions = response.css('tr.odd td:not([class^="sh"]) td a::text').extract()
then do a for-loop to check.
Is there any condition (like td.not above) expression to put in response.css to solve my problem?
Thanks in advance. Any advice will be highly appreciated!
You can use another selector: response.xpath to select element from the html,
and filter the text with xpath contains function.
>>> response.xpath("//tr[#class='odd']/td/a[contains(text(),'Alpha_kinase')]")
[<Selector xpath="//tr[#class='odd']/td/a[contains(text(),'Alpha_kinase')]" data='<a href="http://pfam.xfam.org/family/Alp'>]
I assume there are multiple such tr elements on the page. If so, I would probably do something like:
# get only rows containing 'Alpha_kinase' in link text
for row in response.xpath('//tr[#class="odd" and contains(./td/a/text(), "Alpha_kinase")]'):
# extract all the information
item['link'] = row.xpath('./td[2]/a/#href').extract_first()
...
yield item
This question might be really specific. I am trying to extract the number of employees from the Wikipedia pages of companies such as https://en.wikipedia.org/wiki/3M.
I tried using the Wikipedia python API and some regex queries. However, I couldn't find anything solid that I could generalize for any company (not considering exceptions).
Also, because the table row does not have an id or a class I cannot directly access the value. Following is the source:
<tr>
<th scope="row" style="padding-right:0.5em;">
<div style="padding:0.1em 0;line-height:1.2em;">Number of employees</div>
</th>
<td style="line-height:1.35em;">89,800 (2015)<sup id="cite_ref-FY_1-5" class="reference">[1]</sup></td>
</tr>
So, even though I have the id of the table - infobox vcard so I couldn't figure out a way to scrape this information using beautifulSoup.
Is there a way to extract this information? It is present in the summary table on the right at the beginning of the page.
Using lxml.etree instead of BeautifulSoup, you can get what you want with an XPath expression:
>>> from lxml import etree
>>> import requests
>>> r = requests.get('https://en.wikipedia.org/wiki/3M')
>>> doc = etree.fromstring(r.text)
>>> e = doc.xpath('//table[#class="infobox vcard"]/tr[th/div/text()="Number of employees"]/td')
>>> e[0].text
'89,800 (2015)'
Let's take a closer look at that expression:
//table[#class="infobox vcard"]/tr[th/div/text()="Number of employees"]/td
That says:
Find all table elements that have attribute class set to infobox
vcard, and inside those elements look for tr elements that have a
child th element that has a child div element that contains the
text "Number of employees", and inside that tr element, get the
first td element.
Why reinvent the wheel?
DBpedia
has this information in RDF triples.
See e.g.
http://dbpedia.org/page/3M
I am trying to read in information from this table that changes periodically. The HTML looks like this:
<table class="the_table_im_reading">
<thead>...</thead>
<tbody>
<tr id="uc_6042339">
<td class="expansion">...</td>
<td>
<div id="card_6042339_68587" class="cb">
TEXT I NEED TO READ
</td>
<td>...</td>
more td's
</tr>
<tr id="uc_6194934">...</tr>
<td class="expansion">...</td>
similar as the first <tr id="uc...">
I was able to get to the table using:
table_xpath = "//*[#id="content-wrapper"]/div[5]/table"
table_element = driver.find_element_by_xpath(table_xpath)
And I am trying to read the TEXT I NEED TO READ part for each unique <tr id="uc_unique number">. The id=uc_unique number changes periodically, so I cannot use find element by id.
Is there a way reach that element and read that specific text?
Looks like you can search via the anchor-element link (href-attribute), since I guess this will not change.
via xpath:
yourText = table_element.find_element_by_xpath(.//a[#href='/blahsomelink']).text
UPDATE
OP mentioned that his link is also changing (with each call?), which means that the first approach is not for him.
if you want the text of the first row-element you can try this:
yourText = table_element.find_element_by_xpath(.//tr[1]//a[#class='cl']).text
if you know for example that the link element is always in the second data-element of the first row and there is only one link-element, then you can do this:
yourText = table_element.find_element_by_xpath(.//tr[1]/td[2]//a).text
Unless you provide more detailed requirements as to what you are really searching for, this will have to suffice so far...
Another UPDATE
OP gave more info regarding his requirement:
I am trying to get the text in each row.
Given there is only one anchor-element with class cl in each tr element you can do the following:
elements = table_element.find_elements_by_xpath(.//tr//a[#class='cl'])
for element in elements:
row_text = element.text
Now you can do whatever you need with all these texts...
It looks like you have a few options.
If all you want is the first A, it might be as simple as
table_element.find_element_by_css_selector("a.cl")).text
or the little more specific
table_element.find_element_by_css_selector("div.cb > a.cl")).text
If you want all the As, try the find_elements_* versions of the above.
I managed to find the elements I needed using .get_attribute("textContent") instead of .text , a tip from Get Text from Span returns empty string
I am able to log on and access my account page, here is a sample of the HTML (modified for brevity and to not exceed the URL limit):
<div class='table m_t_4'>
<table class='data' border=0 width=100% cellpadding=0 cellspacing=0>
<tr class='title'>
<td align='center' width='15'><a></a></td>
<td align='center' width='60'></td>
</tr>
<TR bgcolor=>
<td valign='top' align='center'>1</TD>
<td valign='top' align='left'><img src='/images/sale_small.png' alt='bogo sale' />Garden Escape Planters</TD>
<td valign='top' align='right'>13225</TD>
<td valign='top' align='center'>2012-01-17 11:34:32</TD>
<td valign='top' align='center'>FILLED</TD>
<td valign='top' align='center'><A HREF='https://www.daz3d.com/i/account/orderdetail?order=7886745'>7886745</A></TD>
<td valign='top' align='center'><A HREF='https://www.daz3d.com/i/account/req_dlreset?oi=18087292'>Reset</A>
</TR>
Note that the only item I really need is the first HREF with the "order=7886745'>7886745<"...
And there are several of the TR blocks that I need to read.
I am using the following xpath coding:
browser.get('https://www.daz3d.com/i/account/orderitem_hist?')
account_history = browser.find_element_by_xpath("//div[#class='table m_t_4']");
print account_history
product_block = account_history.find_element_by_xpath("//TR[contains(#bgcolor, '')]");
print product_block
product_link = product_block.find_element_by_xpath("//TR/td/A#HREF")
print product_link
I am using the Python FireFox version of webdriver.
When I run this, the account_history and product_block xpath's seem to work fine (they print as "none" so I assume they worked), but I get a "the expession is not a legal expression" error on the product_link.
I have 2 questions:
1: Why doesn't the "//TR/td/A#HREF" xpath work? It is supposed to be using the product_block - which it (should be) just the TR segment, so it should start with the TR, then look for the first td that has the HREF...correct?
I tried using the exact case used in the HTML, but I think it shouldn't matter...
2: What coding do I need to use to see the content (HTML/text) of the elements?
I need to be able to do this to get the URL I need for the next page to call.
I would also like to see for sure that the correct HTML is being read here...that should be a normal part of debugging, IMHO.
How is the element data stored? Is it in an array or table that I can read using Python? It has to be available somewhere, in order to be of any use in testing - doesn't it?
I apologize for being so confused, but I see a lot of info on this on the web, and yet much of it either doesn't do anything, or it causes an error.
There do not seem to be any "standard" coding rules available...and so I am a bit desperate here...
I really like what I have seen in Selenium up to this point, but I need to get past it in order to make this work!
Edited!
OK, after getting some sleep the first answer provided the clue - find_elements_by_xpath creates a list...so I used that to find all of the xpath("//a[contains(#href,'https://www.daz3d.com/i/account/orderdetail?order=')]"); elements in the entire history, then accessed the list it created...and write it to a file to be sure of what I was seeing.
The revised code:
links = open("listlinks.txt", "w")
browser.get('https://www.daz3d.com/i/account/orderitem_hist?')
account_history = browser.find_element_by_xpath("//div[#class='table m_t_4']");
print account_history.get_attribute("div")
product_links = []
product_links = account_history.find_elements_by_xpath("//a[contains(#href,'https://www.daz3d.com/i/account/orderdetail?order=')]");
print str(len(product_links)) + ' elements'
for index, item in enumerate(product_links):
link = item.get_attribute("href")
links.write(str(index) + '\t' + str(link) + '\n')
And this gives me the file with the links I need...
0 https://www.daz3d.com/i/account/orderdetail?order=7905687
1 https://www.daz3d.com/i/account/orderdetail?order=7886745
2 https://www.daz3d.com/i/account/orderdetail?order=7854456
3 https://www.daz3d.com/i/account/orderdetail?order=7812189
So simple I couldn't see it for tripping over it...
Thanks!
1: Why doesn't the "//TR/td/A#HREF" xpath work? It is supposed to be
using the product_block - which it (should be) just the TR segment, so
it should start with the TR, then look for the first td that has the
HREF...correct?
WebDriver only returns elements, not attributes of said elements, thus:
"//TR/td/A"
works, but
"//TR/td/A#HREF"
or
"//TR/td/A#ANYTHING"
does not.
2: What coding do I need to use to see the content (HTML/text) of the
elements?
To retrieve the innertext:
string innerValue = element.Text;
To retrieve the innerhtml:
This is a little harder, you would need to iterate through each of the child elements and reconstruct the html based on that - or you could process the html with a scraping tool.
To retrieve an attribute:
string hrefValue = element.GetAttribute("href");
(C#, hopefully you can make the translation to Python)
There are other ways too to access an element than browser.find_element_by_xpath.
You can access by for e.g. id, or class
browser.find_element_by_id
browser.find_element_by_link_text
browser.find_element
browser.find_element_by_class_name
browser.find_element_by_css_selector
browser.find_element_by_name
browser.find_element_by_partial_link_text
browser.find_element_by_xpath
browser.find_element_by_tag_name
Each of above has a similar function which returns a list(just replace element with elements
Note: I have separated top two rows as I think they might help you.