These commands download the Playwright package and install browser binaries for Chromium, Firefox and WebKit. To modify this behavior see [installation parameters](./installation.md).
## Usage
Once installed, you can `import` Playwright in a Python script, and launch any of the 3 browsers (`chromium`, `firefox` and `webkit`).
Playwright supports two variations of the API: synchronous and asynchronous. If your modern project uses [asyncio](https://docs.python.org/3/library/asyncio.html), you should use async API:
By default, Playwright runs the browsers in headless mode. To see the browser UI, pass the `headless=False` flag while launching the browser. You can also use [`option: slowMo`] to slow down execution. Learn more in the debugging tools [section](./debug.md).
* For Ubuntu 20.04, the additional dependencies are defined in [our Docker image](https://github.com/microsoft/playwright/blob/master/utils/docker/Dockerfile.focal),