class Playwright::BrowserType

“‘
run(playwright)
with sync_playwright() as playwright:
browser.close()
# other actions…
page.goto(“example.com”)
page = browser.new_page()
browser = chromium.launch()
chromium = playwright.chromium
def run(playwright: Playwright):
from playwright.sync_api import sync_playwright, Playwright
“`python sync
typical example of using Playwright to drive automation:
BrowserType provides methods to launch a specific browser instance or connect to an existing one. The following is a

def connect(

This method attaches Playwright to an existing browser instance. When connecting to another browser launched via `BrowserType.launchServer` in Node.js, the major and minor version needs to match the client version (1.2.3 → is compatible with 1.2.x).
def connect(
      wsEndpoint,
      exposeNetwork: nil,
      headers: nil,
      slowMo: nil,
      timeout: nil)
  raise NotImplementedError.new('connect is not implemented yet.')
end

def connect_over_cdp(

```
page = default_context.pages[0]
default_context = browser.contexts[0]
browser = playwright.chromium.connect_over_cdp("http://localhost:9222")
```python sync

**Usage**

**NOTE**: Connecting over the Chrome DevTools Protocol is only supported for Chromium-based browsers.

The default browser context is accessible via [`method: Browser.contexts`].

This method attaches Playwright to an existing browser instance using the Chrome DevTools Protocol.
def connect_over_cdp(
      endpointURL,
      headers: nil,
      slowMo: nil,
      timeout: nil,
      &block)
  wrap_impl(@impl.connect_over_cdp(unwrap_impl(endpointURL), headers: unwrap_impl(headers), slowMo: unwrap_impl(slowMo), timeout: unwrap_impl(timeout), &wrap_block_call(block)))
end

def event_emitter_proxy 

def event_emitter_proxy
_emitter_proxy ||= EventEmitterProxy.new(self, @impl)

def executable_path

A path where Playwright expects to find a bundled browser executable.
def executable_path
  wrap_impl(@impl.executable_path)
end

def launch(

describes some differences for Linux users.
[This article](https://chromium.googlesource.com/chromium/src/+/lkgr/docs/chromium_browser_vs_google_chrome.md)
> Stock browsers like Google Chrome and Microsoft Edge are suitable for tests that require proprietary media codecs for video playback. See [this article](https://www.howtogeek.com/202825/what%E2%80%99s-the-difference-between-chromium-and-chrome/) for other differences between Chromium and Chrome.

>

[Dev Channel](https://www.chromium.org/getting-involved/dev-channel) build is suggested.
[Chrome Canary](https://www.google.com/chrome/browser/canary.html) or
> If Google Chrome (rather than Chromium) is preferred, a

>

option with extreme caution.
Chromium it is bundled with. There is no guarantee it will work with any other version. Use `executablePath`
> **Chromium-only** Playwright can also be used to control the Google Chrome or Microsoft Edge browsers, but it works best with the version of

```
)
ignore_default_args=["--mute-audio"]
browser = playwright.chromium.launch( # or "firefox" or "webkit".
```python sync

You can use `ignoreDefaultArgs` to filter out `--mute-audio` from default arguments:

**Usage**

Returns the browser instance.
def launch(
      args: nil,
      channel: nil,
      chromiumSandbox: nil,
      devtools: nil,
      downloadsPath: nil,
      env: nil,
      executablePath: nil,
      firefoxUserPrefs: nil,
      handleSIGHUP: nil,
      handleSIGINT: nil,
      handleSIGTERM: nil,
      headless: nil,
      ignoreDefaultArgs: nil,
      proxy: nil,
      slowMo: nil,
      timeout: nil,
      tracesDir: nil,
      &block)
  wrap_impl(@impl.launch(args: unwrap_impl(args), channel: unwrap_impl(channel), chromiumSandbox: unwrap_impl(chromiumSandbox), devtools: unwrap_impl(devtools), downloadsPath: unwrap_impl(downloadsPath), env: unwrap_impl(env), executablePath: unwrap_impl(executablePath), firefoxUserPrefs: unwrap_impl(firefoxUserPrefs), handleSIGHUP: unwrap_impl(handleSIGHUP), handleSIGINT: unwrap_impl(handleSIGINT), handleSIGTERM: unwrap_impl(handleSIGTERM), headless: unwrap_impl(headless), ignoreDefaultArgs: unwrap_impl(ignoreDefaultArgs), proxy: unwrap_impl(proxy), slowMo: unwrap_impl(slowMo), timeout: unwrap_impl(timeout), tracesDir: unwrap_impl(tracesDir), &wrap_block_call(block)))
end

def launch_persistent_context(

this context will automatically close the browser.
Launches browser that uses persistent storage located at `userDataDir` and returns the only context. Closing

Returns the persistent browser context instance.
def launch_persistent_context(
      userDataDir,
      acceptDownloads: nil,
      args: nil,
      baseURL: nil,
      bypassCSP: nil,
      channel: nil,
      chromiumSandbox: nil,
      colorScheme: nil,
      deviceScaleFactor: nil,
      devtools: nil,
      downloadsPath: nil,
      env: nil,
      executablePath: nil,
      extraHTTPHeaders: nil,
      firefoxUserPrefs: nil,
      forcedColors: nil,
      geolocation: nil,
      handleSIGHUP: nil,
      handleSIGINT: nil,
      handleSIGTERM: nil,
      hasTouch: nil,
      headless: nil,
      httpCredentials: nil,
      ignoreDefaultArgs: nil,
      ignoreHTTPSErrors: nil,
      isMobile: nil,
      javaScriptEnabled: nil,
      locale: nil,
      noViewport: nil,
      offline: nil,
      permissions: nil,
      proxy: nil,
      record_har_content: nil,
      record_har_mode: nil,
      record_har_omit_content: nil,
      record_har_path: nil,
      record_har_url_filter: nil,
      record_video_dir: nil,
      record_video_size: nil,
      reducedMotion: nil,
      screen: nil,
      serviceWorkers: nil,
      slowMo: nil,
      strictSelectors: nil,
      timeout: nil,
      timezoneId: nil,
      tracesDir: nil,
      userAgent: nil,
      viewport: nil,
      &block)
  wrap_impl(@impl.launch_persistent_context(unwrap_impl(userDataDir), acceptDownloads: unwrap_impl(acceptDownloads), args: unwrap_impl(args), baseURL: unwrap_impl(baseURL), bypassCSP: unwrap_impl(bypassCSP), channel: unwrap_impl(channel), chromiumSandbox: unwrap_impl(chromiumSandbox), colorScheme: unwrap_impl(colorScheme), deviceScaleFactor: unwrap_impl(deviceScaleFactor), devtools: unwrap_impl(devtools), downloadsPath: unwrap_impl(downloadsPath), env: unwrap_impl(env), executablePath: unwrap_impl(executablePath), extraHTTPHeaders: unwrap_impl(extraHTTPHeaders), firefoxUserPrefs: unwrap_impl(firefoxUserPrefs), forcedColors: unwrap_impl(forcedColors), geolocation: unwrap_impl(geolocation), handleSIGHUP: unwrap_impl(handleSIGHUP), handleSIGINT: unwrap_impl(handleSIGINT), handleSIGTERM: unwrap_impl(handleSIGTERM), hasTouch: unwrap_impl(hasTouch), headless: unwrap_impl(headless), httpCredentials: unwrap_impl(httpCredentials), ignoreDefaultArgs: unwrap_impl(ignoreDefaultArgs), ignoreHTTPSErrors: unwrap_impl(ignoreHTTPSErrors), isMobile: unwrap_impl(isMobile), javaScriptEnabled: unwrap_impl(javaScriptEnabled), locale: unwrap_impl(locale), noViewport: unwrap_impl(noViewport), offline: unwrap_impl(offline), permissions: unwrap_impl(permissions), proxy: unwrap_impl(proxy), record_har_content: unwrap_impl(record_har_content), record_har_mode: unwrap_impl(record_har_mode), record_har_omit_content: unwrap_impl(record_har_omit_content), record_har_path: unwrap_impl(record_har_path), record_har_url_filter: unwrap_impl(record_har_url_filter), record_video_dir: unwrap_impl(record_video_dir), record_video_size: unwrap_impl(record_video_size), reducedMotion: unwrap_impl(reducedMotion), screen: unwrap_impl(screen), serviceWorkers: unwrap_impl(serviceWorkers), slowMo: unwrap_impl(slowMo), strictSelectors: unwrap_impl(strictSelectors), timeout: unwrap_impl(timeout), timezoneId: unwrap_impl(timezoneId), tracesDir: unwrap_impl(tracesDir), userAgent: unwrap_impl(userAgent), viewport: unwrap_impl(viewport), &wrap_block_call(block)))
end

def name

Returns browser name. For example: `'chromium'`, `'webkit'` or `'firefox'`.
def name
  wrap_impl(@impl.name)
end

def off(event, callback)

@nodoc
-- inherited from EventEmitter -- 
def off(event, callback)
  event_emitter_proxy.off(event, callback)
end

def on(event, callback)

@nodoc
-- inherited from EventEmitter -- 
def on(event, callback)
  event_emitter_proxy.on(event, callback)
end

def once(event, callback)

@nodoc
-- inherited from EventEmitter -- 
def once(event, callback)
  event_emitter_proxy.once(event, callback)
end