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Add docs on regexs in routing

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Tom Christie 2018-07-12 14:54:25 +01:00
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commit 37a539a202
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README.md
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@ -297,6 +297,14 @@ Path('/users/{username}', app=User, methods=['GET'])
Path components are made available in the scope, as `scope["kwargs"]`.
You can also use regular expressions for more complicated matching.
Named capture groups will be included in `scope["kwargs"]`:
```python
Path('/users/(?P<username>[a-zA-Z0-9_]{1,20})', app=User, methods=['GET'])
```
Because each target of the router is an ASGI instance itself, routers
allow for easy composition. For example: