See projects Credits This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template. evaluate ( '(element) => element.textContent', element ) Roadmap querySelector ( 'h1' ) title = await page. Get an element's textContent: element = await page. ![]() Get a page's textContent: content = await page. If an expression is erroneously treated as function and an error is raised, try setting force_expr to True, to force pyppeteer to treat the string as expression. pyppeteer will try to automatically detect if the string is function or expression, but it will fail sometimes. pyppeteer takes string representation of JavaScript expression or function. You can even open Chrome DevTools to inspect the test environment. Puppeteer shines when it comes to debugging: flip the headless bit to false, add slowMo, and you’ll see what the browser is doing. New pages are only opened when there is enough free CPU and memory. Puppeteer's version of evaluate() takes a JavaScript function or a string representation of a JavaScript expression. Puppeteer v1.5.0 also exposes browser contexts, making it possible to efficiently parallelize test execution. Since PuppeteerCrawler uses headless Chrome to download web pages and extract data. The equivalent methods to Puppeteer's $, $$, and $x methods are listed below, along with some shorthand methods for your convenience: puppeteerĪrguments of Page.evaluate() and Page.querySelectorEval() Keyword argument style options (more pythonic, isn't it?): browser = await launch ( headless = True ) Element selector method names Open web page and take a screenshot: import asyncio from pyppeteer import launch async def main (): browser = await launch () page = await browser. Puppeteer's documentation and its troubleshooting guide are also great resources for pyppeteer users. One way to do this is to run pyppeteer-install command before prior to using this library.įull documentation can be found here. If you don't prefer this behavior, ensure that a suitable Chrome binary is installed. Or install the latest version from this github repo: pip install -U When you run pyppeteer for the first time, it downloads the latest version of Chromium (~150MB) if it is not found on your system. ![]() Install with pip from PyPI: pip install pyppeteer
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