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ruiavspanther

MIT 8 3 1,731
469 (month) Oct 17 2018 0.8.5(1 year, 6 months ago)
2,878 4 195 MIT
v2.1.1(4 months ago) Jul 17 2018 8.9 thousand (month)

Ruia is an async web scraping micro-framework, written with asyncio and aiohttp, aims to make crawling url as convenient as possible.

Ruia is inspired by scrapy however instead of Twisted it's based entirely on asyncio and aiohttp.

It also supports various features like cookies, headers, and proxy, which makes it very useful in dealing with complex web scraping tasks.

Panther is a convenient standalone library to scrape websites and to run end-to-end tests using real browsers.

Panther is super powerful. It leverages the W3C's WebDriver protocol to drive native web browsers such as Google Chrome and Firefox.

Panther is very easy to use, because it implements Symfony's popular BrowserKit and DomCrawler APIs, and contains all the features you need to test your apps. It will sound familiar if you have ever created a functional test for a Symfony app: as the API is exactly the same! Keep in mind that Panther can be used in every PHP project, as it is a standalone library.

Panther automatically finds your local installation of Chrome or Firefox and launches them, so you don't need to install anything else on your computer, a Selenium server is not needed!

In test mode, Panther automatically starts your application using the PHP built-in web-server. You can focus on writing your tests or web-scraping scenario and Panther will take care of everything else.

Features:

  • executes the JavaScript code contained in webpages
  • supports everything that Chrome (or Firefox) implements
  • allows taking screenshots
  • can wait for asynchronously loaded elements to show up
  • lets you run your own JS code or XPath queries in the context of the loaded page
  • supports custom Selenium server installations
  • supports remote browser testing services including SauceLabs and BrowserStack

Example Use


#!/usr/bin/env python
"""
 Target: https://news.ycombinator.com/
 pip install aiofiles
"""
import aiofiles

from ruia import AttrField, Item, Spider, TextField


class HackerNewsItem(Item):
    target_item = TextField(css_select="tr.athing")
    title = TextField(css_select="a.storylink")
    url = AttrField(css_select="a.storylink", attr="href")

    async def clean_title(self, value):
        return value.strip()


class HackerNewsSpider(Spider):
    start_urls = [
        "https://news.ycombinator.com/news?p=1",
        "https://news.ycombinator.com/news?p=2",
    ]
    concurrency = 10
    # aiohttp_kwargs = {"proxy": "http://0.0.0.0:1087"}

    async def parse(self, response):
        async for item in HackerNewsItem.get_items(html=await response.text()):
            yield item

    async def process_item(self, item: HackerNewsItem):
        async with aiofiles.open("./hacker_news.txt", "a") as f:
            self.logger.info(item)
            await f.write(str(item.title) + "\n")


if __name__ == "__main__":
    HackerNewsSpider.start(middleware=None)
<?php

use Symfony\Component\Panther\Client;

require __DIR__.'/vendor/autoload.php'; // Composer's autoloader

$client = Client::createChromeClient();
// Or, if you care about the open web and prefer to use Firefox
$client = Client::createFirefoxClient();

$client->request('GET', 'https://api-platform.com'); // Yes, this website is 100% written in JavaScript
$client->clickLink('Get started');

// Wait for an element to be present in the DOM (even if hidden)
$crawler = $client->waitFor('#installing-the-framework');
// Alternatively, wait for an element to be visible
$crawler = $client->waitForVisibility('#installing-the-framework');

echo $crawler->filter('#installing-the-framework')->text();
$client->takeScreenshot('screen.png'); // Yeah, screenshot!

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