Run your tests directly in the latest version of Chrome using the latest JavaScript and browser features. Create an up-to-date, automated testing environment.Automate form submission, UI testing, keyboard input, etc.Crawl a SPA (Single-Page Application) and generate pre-rendered content (i.e.Generate screenshots and PDFs of pages.Most things that you can do manually in the browser can be done using Puppeteer! Here are a few examples to get you started: Puppeteer runs headless by default, but can be configured to run full (non-headless) Chrome or Chromium. Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol.
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.\n\n# Examples:\n\nGet a page's `textContent`:\n\n```python\ncontent = await page.evaluate('', force_expr=True)\n```\n\nGet an element's `textContent`:\n\n```python\nelement = await page.querySelector('h1')\ntitle = await page.evaluate('(element) => element.API | FAQ | Contributing | Troubleshooting 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.
The equivalent methods to Puppeteer's `$`, `$$`, and `$x` methods are listed below, along with some shorthand methods for your convenience:\n\n| puppeteer | pyppeteer | pyppeteer shorthand |\n|-|-|-|\n| Page.$() | Page.querySelector() | Page.J() |\n| Page.$$() | Page.querySelectorAll() | Page.JJ() |\n| Page.$x() | Page.xpath() | Page.Jx() |\n\n# Arguments of `Page.evaluate()` and `Page.querySelectorEval()`\n\npuppeteer's version of `evaluate()` takes a JavaScript function or a string representation of a JavaScript expression. () and () are also great resources for pyppeteer users.Īwait page.screenshot()\n```\n\nKeyword argument style options (more pythonic, isn't it?):\n\n```python\nbrowser = await launch(headless=True)\n```\n\n# Element selector method names\n\nIn python, `$` is not a valid identifier. One way to do this is to run `pyppeteer-install` command before prior to using this library.įull documentation can be found (). If you don't prefer this behavior, ensure that a suitable Chrome binary is installed. > **Note**: When you run pyppeteer for the first time, it downloads the latest version of Chromium (~150MB) if it is not found on your system. * Free software: MIT license (including the work distributed under the Apache 2.0 license) Unofficial Python port of () JavaScript (headless) chrome/chromium browser automation library.
Before undertaking any sort of developement, it is highly recommended that you take a look at () for the ongoing effort to update this library to avoid duplicating efforts. _Note: this is a continuation of the ()_.
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