shot-scraper
Nokogiri
shot-scraper | Nokogiri | |
---|---|---|
16 | 20 | |
1,535 | 6,108 | |
- | 0.2% | |
7.1 | 9.4 | |
about 1 month ago | 4 days ago | |
Python | C | |
Apache License 2.0 | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
shot-scraper
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I want to create IMDB for Open source projects
I had one of these recently! https://github.com/simonw/shot-scraper/pull/133/files
They're /incredibly/ rare though.
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2024-03-01 listening in on the neighborhood
If anyone wants the raw data, it's available in window._Flourish_data variable on https://flo.uri.sh/visualisation/16818696/embed
Which means you can extract it with my https://shot-scraper.datasette.io/ tool like this:
shot-scraper javascript \
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Web Scraping in Python – The Complete Guide
I strongly recommend adding Playwright to your set of tools for Python web scraping. It's by far the most powerful and best designed browser automation tool I've ever worked with.
I use it for my shot-scraper CLI tool: https://shot-scraper.datasette.io/ - which lets you scrape web pages directly from the command line by running JavaScript against pages to extract JSON data: https://shot-scraper.datasette.io/en/stable/javascript.html
- A command-line utility for taking automated screenshots of websites
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Don’t Build a General Purpose API to Power Your Own Front End (2021)
This is exactly what the `Accept` HTTP header is for https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Ac...
I think the author is generally correct that all JSON should be provided in a single request, but if you want to prove it, then you should be able to change your accept header to and from `application/json`/`text/html seeing nearly identical data.
In fact, this is what both GitLab and Github do. Try it out!
`curl -L https://github.com/simonw/shot-scraper` (text/html)
`curl --header "Accept: application/json" -L https://github.com/simonw/shot-scraper` (application/json)
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Git scraping: track changes over time by scraping to a Git repository
Git is a key technology in this approach, because the value you get out of this form of scraping is the commit history - it's a way of turning a static source of information into a record of how that information changed over time.
I think it's fine to use the term "scraping" to refer to downloading a JSON file.
These days an increasing number of websites work by serving up JSON which is then turned into HTML by a client-side JavaScript app. The JSON often isn't a formally documented API, but you can grab it directly to avoid the extra step of processing the HTML.
I do run Git scrapers that process HTML as well. A couple of examples:
scrape-san-mateo-fire-dispatch https://github.com/simonw/scrape-san-mateo-fire-dispatch scrapes the HTML from http://www.firedispatch.com/iPhoneActiveIncident.asp?Agency=... and records both the original HTML and converted JSON in the repository.
scrape-hacker-news-by-domain https://github.com/simonw/scrape-hacker-news-by-domain uses my https://shot-scraper.datasette.io/ browser automation tool to convert an HTML page on Hacker News into JSON and save that to the repo. I wrote more about how that works here: https://simonwillison.net/2022/Dec/2/datasette-write-api/
- Web Scraping via JavaScript Runtime Heap Snapshots (2022)
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Need help with downloading a section of multiple sites as pdf files.
You can use shot-scraper: https://github.com/simonw/shot-scraper
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Ask HN: Small scripts, hacks and automations you're proud of?
I have a neat Hacker News scraping setup that I'm really pleased with.
The problem: I want to know when content from one of my sites is submitted to Hacker News, and keep track of the points and comments over time. I also want to be alerted when it happens.
Solution: https://github.com/simonw/scrape-hacker-news-by-domain/
This repo does a LOT of things.
It's an implementation of my Git scraping pattern - https://simonwillison.net/2020/Oct/9/git-scraping/ - in that it runs a script once an hour to check for more content.
It scrapes https://news.ycombinator.com/from?site=simonwillison.net (scraping the HTML because this particular feature isn't supported by the Hacker News API) using shot-scraper - a tool I built for command-line browser automation: https://shot-scraper.datasette.io/
The scraper works by running this JavaScript against the page and recording the resulting JSON to the Git repository: https://github.com/simonw/scrape-hacker-news-by-domain/blob/...
That solves the "monitor and record any changes" bit.
But... I want alerts when my content shows up.
I solve that using three more tools I built: https://datasette.io/ and https://datasette.io/plugins/datasette-atom and https://datasette.cloud/
This script here runs to push the latest scraped JSON to my SQLite database hosted using my in-development SaaS platform, Datasette Cloud: https://github.com/simonw/scrape-hacker-news-by-domain/blob/...
I defined this SQL view https://simon.datasette.cloud/data/hacker_news_posts_atom which shows the latest data in the format required by the datasette-atom plugin.
Which means I can subscribe to the resulting Atom feed (add .atom to that URL) in NetNewsWire and get alerted when my content shows up on Hacker News!
I wrote a bit more about how this all works here: https://simonwillison.net/2022/Dec/2/datasette-write-api/
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Show HN: Plus – Self Updating Screenshots
Sounds a lot like Simon Willison's open source project shot-scraper
https://github.com/simonw/shot-scraper
Nokogiri
- Web Scraping in Python – The Complete Guide
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Did you know Nokogiri now has opt-in HTML5 parsing?
release planning: v1.16.0 · Issue #2897 · sparklemotion/nokogiri
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As a Go developer, I’m surprised Crystal isn’t more popular
What's holding me back from going all in with Crystal is I have a lot of pre-existing Ruby code, and porting Ruby code to Crystal can be tricky. For example, Crystal lacks an Enumerator class (aka generators) due to captured block semantics. I also wish the shards ecosystem was a little more mature; for example there's multiple HTML parsing libraries, but none have all of the features that Ruby's Nokogiri has. For new greenfield backend projects, I would totally use Crystal.
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Two months into learning Ruby, it is the most beautiful language I ever learned
Welcome! Ruby isn't exactly "dying", but the hype/popularity is definitely fading. This is primarily because Ruby is no longer "new", most of Ruby's popularity came from Rails, and now Rails is no longer the "new hotness". However, Ruby still has lots of awesome features and lots of awesome other libraries and frameworks, such as the new fancy irb gem that uses reline, nokogiri, chunky_png, the async gems, Dragon Ruby, SciRuby, Ronin, and the new Hanami web framework.
- What should I be learning?
- Comparable maintained Kimurai alternative?
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In "Your Name" (2016), Mitsuha and Tesshi are seen turning a tree into their makeshift café, which is why one of the trees in the town is later missing
great for hacking at xml
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Ditch Your Version Manager
Mike has worked hard over the years to have Nokogiri come with its dependencies. It does come with libxml and all that is required.
From https://nokogiri.org
> These dependencies are met by default by Nokogiri's packaged versions of the libxml2 and libxslt source code, but a configuration option --use-system-libraries is provided to allow specification of alternative library locations.
Some authors work hard to have their tools do the right thing and consistently.
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Web scraping with rails
If the page is rendered as html you can use Nokogiri. It has great support and is pretty easy to get started with too.
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Nokogiri 1.12 supports HTML5 parsing (after assimilating Nokogumbo)
And even now, pulling in a Java-based HTML5 parser is still probably easier than re-implementing in FFI, which is why I created https://github.com/sparklemotion/nokogiri/issues/2227 and would love to have this the conversation there if possible.
What are some alternatives?
gmail-sidebar-drive - A simple gmail add on to display all the drive folders and files in sidebar.
Oga - Oga is an XML/HTML parser written in Ruby.
zettelkasten - Creating notes with the zettelkasten note taking method and storing all notes on github
Ox - Ruby Optimized XML Parser
scrape-san-mateo-fire-dispatch
HTML::Pipeline - HTML processing filters and utilities
bbcrss - Scrapes the headlines from BBC News indexes every five minutes
Oj - Optimized JSON
scrape-hacker-news-by-domain - Scrape HN to track links from specific domains
ROXML - ROXML is a module for binding Ruby classes to XML. It supports custom mapping and bidirectional marshalling between Ruby and XML using annotation-style class methods, via Nokogiri or LibXML.
SeleniumBase - 📊 Python's all-in-one framework for web crawling, scraping, testing, and reporting. Supports pytest. UC Mode provides stealth. Includes many tools.
HappyMapper - Object to XML mapping library, using Nokogiri (Fork from John Nunemaker's Happymapper)