parsel | Parsel lets you extract data
kandi X-RAY | parsel Summary
kandi X-RAY | parsel Summary
Parsel lets you extract data from XML/HTML documents using XPath or CSS selectors
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Top functions reviewed by kandi - BETA
- Create a new SelectorList with elements matching xpath
- Check if x is a listlike object
- Flattens x
- Flatten a nested list
- Return the first occurrence of a regular expression
- Returns a list of matching regular expressions
- Create a root node
- Create a root node from text
- Create a pseudo element
- Create a new XPath object from an XPath
- Return a new selector list with css
- Get all values from the cache
- Get the value of the node
- Create a pseudo element from a text node
- Setup the class
- Set the function namespace
parsel Key Features
parsel Examples and Code Snippets
Community Discussions
Trending Discussions on parsel
QUESTION
All images downloaded from the image scraper have the same file size of 130 kb and are corrupted and cannot be seen in the image viewer.
I really have no idea what the problem is.
Anyone please give me some advice on this matter.
...ANSWER
Answered 2022-Apr-15 at 08:57I tested your code and you just got a little mistake
change:
QUESTION
I'm a Scrapy enthusiast into scraping for 3 months. Because I really enjoy scraping, I ended up being frustrated and excitedly purchased a proxy package from Leafpad.
Unfortunetaly, when I uploaded them to my Scrapy spider, I recevied ValueError:
I used scrapy-rotating-proxies to integrate the proxies. I added the proxies which are not numbers but string urls like below:
...ANSWER
Answered 2022-Feb-21 at 02:25The way you have defined your proxies list is not correct. You need to use the format username:password@server:port and not server:port:username:password. Try using the below definition:
QUESTION
I'm looking for a solution to get full-size images from a website.
By using the code I recently finished through someone's help on stackoverflow, I was able to download both full-size images and down-sized images.
What I want is for all downloaded images to be full-sized.
For example, some image filenames have "-625x417.jpg" as a suffix, and some images don't have it.
https://www.bikeexif.com/1968-harley-davidson-shovelhead (has suffix) https://www.bikeexif.com/harley-panhead-walt-siegl (None suffix)
If this suffix can be removed, then it'll be a full-size image.
https://kickstart.bikeexif.com/wp-content/uploads/2018/01/1968-harley-davidson-shovelhead-625x417.jpg (Scraped) https://kickstart.bikeexif.com/wp-content/uploads/2018/01/1968-harley-davidson-shovelhead.jpg (Full-size image's filename if removed: -625x417)
Considering there's a possibility that different image resolutions exist as filenames, So it needed to be removed in a different size too.
I guess I may need to use regular expressions to filter out '- 3digit x 3digit' from below.
But I really don't have any idea how to do that.
If you can do that, please help me finish this. Thank you!
...ANSWER
Answered 2022-Mar-05 at 21:24I would go with something like this:
QUESTION
My code is only making empty folders and not downloading images.
So, I think I need it to be modified so that the images can be clearly downloaded.
I tried to fix it by myself, but can't figure it out how to do.
Anyone please help me. Thank you!
...ANSWER
Answered 2022-Mar-04 at 23:49This page uses JavaScript to create link "download" but requests/urllib/beautifulsoup/lxml/parsel/scrapy can't run JavaScript - and this makes problem.
But it seems page uses the same urls to display images on page - so you may use //img/@src
But this makes another problem because page uses JavaScript for "lazy loading" images and only first img has src. Other images have url in data-src (and normally Javascript copy data-src to src when you scroll page) so you have to get data-src to download some of images.
You need something like this to get @src (for first image) and @data-src (for other images).
QUESTION
I'm trying to throw together a scrapy spider for a german second-hand products website using code I have successfully deployed on other projects. However this time, I'm running into a TypeError and I can't seem to figure out why.
Comparing to this question ('TypeError: expected string or bytes-like object' while scraping a site) It seems as if the spider is fed a non-string-type URL, but upon checking the the individual chunks of code responsible for generating URLs to scrape, they all seem to spit out strings.
To describe the general functionality of the spider & make it easier to read:
- The URL generator is responsible for providing the starting URL (first page of search results)
- The parse_search_pages function is responsible for pulling a list of URLs from the posts on that page.
- It checks the Dataframe if it was scraped in the past. If not, it will scrape it.
- The parse_listing function is called on an individual post. It uses the x_path variable to pull all the data. It will then continue to the next page using the CrawlSpider rules.
It's been ~2 years since I've used this code and I'm aware a lot of functionality might have changed. So hopefully you can help me shine a light on what I'm doing wrong?
Cheers, R.
///
The code
...ANSWER
Answered 2022-Feb-27 at 09:47So the answer is simple :) always triple-check your code! There were still some commas where they shouldn't have been. This resulted in my allowed_domains variable being a tuple instead of a string.
Incorrect
QUESTION
I'm new in scrapy and I'm trying to scrap https:opensports.I need some data from all products, so the idea is to get all brands (if I get all brands I'll get all products). Each url's brand, has a number of pages (24 articles per page), so I need to define the total number of pages from each brand and then get the links from 1 to Total number of pages. I ' m facing a (or more!) problem with hrefs...This is the script:
...ANSWER
Answered 2022-Jan-16 at 13:17For the relative you can use response.follow or with request just add the base url.
Some other errors you have:
- The pagination doesn't always work.
- In the function
parse_listingsyou have class attribute instead of href. - For some reason I'm getting 500 status for some of the urls.
I've fixed errors #1 and #2, you need to figure out how to fix error #3.
QUESTION
In a website with lawyers' work details, I'm trying to scrape information through this 4 layered algoritm where I need to do two FormRequests:
- Access the link containing the search box which submits the name of the lawyer requests (image1) ("ali" is passed as the name inquiry)
- Make the search request with the payload through FormRequest, thereby accessing the page with lawyers found (image2)
- Consecutively clicking on the magnifying glass buttons to reach the pages with each lawyers details through FormRequest (image3) (ERROR OCCURS HERE)
- Parsing each lawyer's data points indicated in image3
PROBLEM: My first FormRequest works that I can reach the list of lawyers. Then I encounter two problems:
- Problem1: My for loop only works for the first lawyer found.
- Problem2: Second FormRequest just doesn't work.
My insight: Checking the payload needed for the 2nd FormRequest for each lawyer requested, all the value numbers of as a bulk are added to the payload as well as the index number of the lawyer requested.
Am I really supposed to pass all the values for each request? How can send the correct payload? In my code I attempted to send the particular lawyer's value and index as a payload but it didn't work. What kind of a code should I use to get the details of all lawyers in the list?
...ANSWER
Answered 2021-Dec-27 at 12:19The website uses some kind of protection, this code works sometimes and once it's detected, you'll have to wait a while until their anti-bot clear things or use proxies instead:
Import this:
QUESTION
Here is the code for the spider. I am trying to scrape these links using a Scrapy spider and get the output as a csv. I tested the CSS selector separately with beautiful soup and scraped the desired links, but cannot get this spider to run. I also tried to account for DEBUG message in the settings, but no luck so far. Please help
...ANSWER
Answered 2021-Dec-26 at 13:45Just a guess - you may be facing a dynamic loading webpage that scrapy cannot directly scrape without the help of selenium.
I've set up a few loggers with the help of adding headers and I don't get anything from the start_requests. Which is why I made the assumption as before.
On a additional note, I tried this again with splash and it works.
Here's the code for it:
QUESTION
I am trying to implement a similar script on my project following this blog post here: https://www.imagescape.com/blog/scraping-pdf-doc-and-docx-scrapy/
The code of the spider class from the source:
...ANSWER
Answered 2021-Dec-12 at 19:39This program was meant to be ran in linux, so there are a few steps you need to do in order for it to run in windows.
1. Install the libraries.
Installation in Anaconda:
QUESTION
I am in the process of trying to integrate my own loggers with my Scrapy
project. The desired outcome is to log output from both my custom loggers and
Scrapy loggers to stderr at the desired log level. I have observed the
following:
- Any module/class that uses its own logger seems to override the Scrapy logger,
as Scrapy logging from within the related module/class appears to be
completely silenced.
- The above is confirmed whenever I disable all references to my custom
logger. For exmaple, if I do not instantiate my custom logger in
forum.py, Scrapy packages will resume sending logging output tostderr.
- The above is confirmed whenever I disable all references to my custom
logger. For exmaple, if I do not instantiate my custom logger in
- I've tried this both with
install_root_handler=Trueandinstall_root_handler=False, and I don't see any differences to the logging output. - I have confirmed that my loggers are being properly fetched from my logging config, as the returned logger object has the correct attributes.
- I have confirmed that my Scrapy settings are successfully passed to
CrawlerProcess.
My project structure:
...ANSWER
Answered 2021-Nov-13 at 20:18I finally figured this out. TLDR: calling fileConfig() disabled all existing loggers by default, which is how I was instantiating my logger objects in my get_logger() function. Calling this as fileConfig(conf, disable_existing_loggers=False) resolves the issue, and now I can see logging from all loggers.
I decided to drill down a bit further into Python and Scrapy source code, and I noticed that any logger object called by Scrapy source code had disabled=True, which clarified why nothing was logged from Scrapy.
The next question was "why the heck are all Scrapy loggers hanging out with disabled=True?" Google came to the rescue and pointed me to a thread where someone pointed out that calling fileConfig() disables all existing loggers at the time of the call.
I had initially thought that the disable_existing_loggers parameter defaulted to False. Per the Python docs, it turns out my thinking was backwards.
Now that I've updated my get_logger() function in utils.py to:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install parsel
You can use parsel like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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