---
title: "Tornado"
description: "Learn about using Sentry with Tornado."
url: https://docs.sentry.io/platforms/python/integrations/tornado/
---

# Tornado | Sentry for Python

The Tornado integration adds support for the [Tornado Web Framework](https://www.tornadoweb.org/).

## [Install](https://docs.sentry.io/platforms/python/integrations/tornado.md#install)

Install `sentry-sdk` from PyPI:

```bash
pip install sentry-sdk
```

If you're on Python 3.6, you also need the `aiocontextvars` package:

```bash
pip install "aiocontextvars"
```

## [Configure](https://docs.sentry.io/platforms/python/integrations/tornado.md#configure)

If you have the `tornado` package in your dependencies, the Tornado integration will be enabled automatically when you initialize the Sentry SDK.

Error Monitoring\[ ]Tracing\[ ]Profiling\[ ]Logs

```python
import sentry_sdk

sentry_sdk.init(
    dsn="___PUBLIC_DSN___",
    # Add data like request headers and IP for users, if applicable;
    # see https://docs.sentry.io/platforms/python/data-management/data-collected/ for more info
    send_default_pii=True,
    # ___PRODUCT_OPTION_START___ performance
    # Set traces_sample_rate to 1.0 to capture 100%
    # of transactions for tracing.
    traces_sample_rate=1.0,
    # ___PRODUCT_OPTION_END___ performance
    # ___PRODUCT_OPTION_START___ profiling
    # To collect profiles for all profile sessions,
    # set `profile_session_sample_rate` to 1.0.
    profile_session_sample_rate=1.0,
    # Profiles will be automatically collected while
    # there is an active span.
    profile_lifecycle="trace",
    # ___PRODUCT_OPTION_END___ profiling
    # ___PRODUCT_OPTION_START___ logs

    # Enable logs to be sent to Sentry
    enable_logs=True,
    # ___PRODUCT_OPTION_END___ logs
)
```

## [Verify](https://docs.sentry.io/platforms/python/integrations/tornado.md#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/> 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](https://docs.sentry.io/platforms/python/integrations/tornado.md#behavior)

* The Tornado integration will be installed for all of your apps and handlers.

* All exceptions leading to a Internal Server Error are reported.

* Request data is attached to all events: **HTTP method, URL, headers, form data, JSON payloads**. Sentry excludes raw bodies and multipart file uploads. Sentry also excludes personally identifiable information (such as user ids, usernames, cookies, authorization headers, IP addresses) unless you set `send_default_pii` to `True`.

* Each request has a separate scope. Changes to the scope within a view, for example setting a tag, will only apply to events sent as part of the request being handled.

* Logging with any logger will create breadcrumbs when the [Logging](https://docs.sentry.io/platforms/python/integrations/logging.md) integration is enabled (done by default).

## [Supported Versions](https://docs.sentry.io/platforms/python/integrations/tornado.md#supported-versions)

* Tornado: 6+
* Python: 3.8+

The versions above apply for the current major version of the Python SDK. If you're looking to use Sentry with older Python or framework versions, consider using an older major version of the SDK.