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# Werkzeug
This section describes the integration with [Werkzeug](https://werkzeug.palletsprojects.com), a WSGI web application library.
## Low level
The integration defines classes useful for low-level integration.
### Request
Use `WerkzeugOpenAPIRequest` to create an OpenAPI request from a Werkzeug request:
``` python
from openapi_core.contrib.werkzeug import WerkzeugOpenAPIRequest
def application(environ, start_response):
request = Request(environ)
openapi_request = WerkzeugOpenAPIRequest(request)
openapi.validate_request(openapi_request)
response = Response("Hello world", mimetype='text/plain')
return response(environ, start_response)
```
### Response
Use `WerkzeugOpenAPIResponse` to create an OpenAPI response from a Werkzeug response:
``` python
from openapi_core.contrib.werkzeug import WerkzeugOpenAPIResponse
def application(environ, start_response):
request = Request(environ)
response = Response("Hello world", mimetype='text/plain')
openapi_request = WerkzeugOpenAPIRequest(request)
openapi_response = WerkzeugOpenAPIResponse(response)
openapi.validate_response(openapi_request, openapi_response)
return response(environ, start_response)
```
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