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Jul 30, 2020
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docs: leave async examples in README.md #108

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82 changes: 78 additions & 4 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -70,10 +70,10 @@ with sync_playwright() as p:
iphone_11 = p.devices['iPhone 11 Pro']
browser = p.webkit.launch(headless=False)
context = browser.newContext(
**iphone_11,
locale='en-US',
geolocation={ 'longitude': 12.492507, 'latitude': 41.889938 },
permissions=['geolocation']
**iphone_11,
locale='en-US',
geolocation={ 'longitude': 12.492507, 'latitude': 41.889938 },
permissions=['geolocation']
)
page = context.newPage()
page.goto('https://maps.google.com')
Expand All @@ -83,6 +83,32 @@ with sync_playwright() as p:
browser.close()
```

... or, if you are comfortable using asyncio, you can do the following:

```py
import asyncio
from playwright import async_playwright

async def main():
async with async_playwright() as p:
iphone_11 = p.devices['iPhone 11 Pro']
browser = await p.webkit.launch(headless=False)
context = await browser.newContext(
**iphone_11,
locale='en-US',
geolocation={ 'longitude': 12.492507, 'latitude': 41.889938 },
permissions=['geolocation']
)
page = await context.newPage()
await page.goto('https://maps.google.com')
await page.click('text="Your location"')
await page.waitForRequest('*preview/pwa')
await page.screenshot(path='colosseum-iphone.png')
await browser.close()

asyncio.get_event_loop().run_until_complete(main())
```

#### Evaluate in browser context

This code snippet navigates to example.com in Firefox, and executes a script in the page context.
Expand All @@ -105,6 +131,30 @@ with sync_playwright() as p:
browser.close()
```

... and again, async version:

```py
import asyncio
from playwright import async_playwright

async def main():
async with async_playwright() as p:
browser = await p.firefox.launch()
page = await browser.newPage()
await page.goto('https://www.example.com/')
dimensions = await page.evaluate('''() => {
return {
width: document.documentElement.clientWidth,
height: document.documentElement.clientHeight,
deviceScaleFactor: window.devicePixelRatio
}
}''')
print(dimensions)
await browser.close()

asyncio.get_event_loop().run_until_complete(main())
```

#### Intercept network requests

This code snippet sets up request routing for a Chromium page to log all network requests.
Expand All @@ -127,6 +177,30 @@ with sync_playwright() as p:
browser.close()
```

... async version:

```py
import asyncio
from playwright import async_playwright

async def main():
async with async_playwright() as p:
browser = await p.chromium.launch()
page = await browser.newPage()

def log_and_continue_request(route, request):
print(request.url)
asyncio.create_task(route.continue_())

# Log and continue all network requests
await page.route('**', lambda route, request: log_and_continue_request(route, request))

await page.goto('http://todomvc.com')
await browser.close()

asyncio.get_event_loop().run_until_complete(main())
```

# Is Playwright for Python ready?

We are ready for your feedback, but we are still covering Playwright Python with the tests, so expect a bumpy ride and don't use for production.
Expand Down