Python: Getting Started tornado (#7831)

* Python: Getting Started tornado

* style(lint): Auto commit lint changes

* Update src/platforms/python/guides/tornado/index.mdx

Co-authored-by: Shana Matthews <shana.l.matthews@gmail.com>

---------

Co-authored-by: getsantry[bot] <66042841+getsantry[bot]@users.noreply.github.com>
Co-authored-by: Shana Matthews <shana.l.matthews@gmail.com>

Author: 3 people

src/platforms/python/guides/tornado/index.mdx

@@ -6,14 +6,14 @@ redirect_from:
 description: "Learn about using Sentry with Tornado."
 ---
 
-The Tornado integration adds support for the [Tornado Web Framework](https://www.tornadoweb.org/). A Tornado version of 5 or greater and Python 3.6 or greater is required.
+The Tornado integration adds support for the [Tornado Web Framework](https://www.tornadoweb.org/).
 
 ## Install
 
-Install `sentry-sdk` from PyPI:
+Install `sentry-sdk` from PyPI with the `tornado` extra:
 
 ```bash
-pip install --upgrade sentry-sdk
+pip install --upgrade sentry-sdk[tornado]
 ```
 
 If you're on Python 3.6, you also need the `aiocontextvars` package:
@@ -34,22 +34,48 @@ from sentry_sdk.integrations.tornado import TornadoIntegration
 
 sentry_sdk.init(
     dsn="___PUBLIC_DSN___",
-    integrations=[
-        TornadoIntegration(),
-    ],
-
     # Set traces_sample_rate to 1.0 to capture 100%
     # of transactions for performance monitoring.
-    # We recommend adjusting this value in production,
     traces_sample_rate=1.0,
+    integrations=[
+        TornadoIntegration(),
+    ],
 )
 
-# Your app code here, without changes
-
-class MyHandler(...):
+class MainHandler(tornado.web.RequestHandler):
     # ...
 ```
 
+## Verify
+
+```python
+import asyncio
+import tornado
+
+sentry_sdk.init(...)  # same as above
+
+class MainHandler(tornado.web.RequestHandler):
+    def get(self):
+        1/0  # raises an error
+        self.write("Hello, world")
+
+def make_app():
+    return tornado.web.Application([
+        (r"/", MainHandler),
+    ])
+
+async def main():
+    app = make_app()
+    app.listen(8888)
+    await asyncio.Event().wait()
+
+asyncio.run(main())
+```
+
+When you point your browser to [http://localhost:8888/](http://localhost:8888/) a transaction in the Performance section of [sentry.io](https://sentry.io) will be created. Additionally, an error event will be sent to [sentry.io](https://sentry.io) and will be connected to the transaction.
+
+It takes a couple of moments for the data to appear in [sentry.io](https://sentry.io).
+
 ## Behavior
 
 - The Tornado integration will be installed for all of your apps and handlers.
@@ -63,3 +89,8 @@ class MyHandler(...):
 - Logging with any logger will create breadcrumbs when
   the [Logging](/platforms/python/guides/logging/)
   integration is enabled (done by default).
+
+## Supported Versions
+
+- Tornado: 5+
+- Python: 2.7+