Using classes to navigate between files in python is a common thing you will be doing.  Hence, knowing when to create python classes is important as well as knowing how to use the methods created  in the classes file. 

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For example: 

```
import Car 
```

if you have a  `car.py` class file and you are trying to bring that into another `action.py` file. 

Learn more about imports in python [here](https://www.codementor.io/@sheena/python-path-virtualenv-import-for-beginners-du107r3o1).