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Prefect 2.8.4: How do I structure my flow definition code to enable code reuse?

I have the following project structure:
```.
├── flow_definitions
│   ├── __init__.py
│   ├── masterdata
│   │   ├── deployment.py
│   │   ├── extract_data.py
│   │   └── __init__.py
│   ├── classification
│   │   ├── deployment.py
│   │   ├── __init__.py
│   │   └── preprocessing.py
│   └── utils
│       ├── date_utils.py
│       ├── __init__.py
├── README.md
├── requirements.txt
└── setup.py```
In `classification/preprocessing.py`, I am doing a sibling import as follows:
```from flows.flow_definitions.utils.date_utils import parse_date```
However, this fails:
```ModuleNotFoundError: No module named 'flows'```
since it seemingly can't find my parent module (`.`).

Strictly speaking, this is a Python problem and not a prefect issue. However, I can't seem to find an example detailing this kind of approach. I thought that maybe the Deployment `path` parameter might have something to do with this scenario, but it seems that's not the case.

So, is there an example of a project using common functionality? Do I *have* to install my `utils` module, or is there another preferred way to get this to work in my flows?

As you identified, it is a Python problem. Are you running any of the listed modules, or are they purely for import?

If purely import, access with relatives.
```# classification/preprocessing.py
from ..utils.date_utils import parse_date```
If both a module and script entrypoint
```# classification/preprocessing.py
try:
    from ..utils.date_utils import parse_date
except ImportError:
    from flows.flow_definitions.utils.date_utils import parse_date```

Actually, the script entrypoint code may be off, can't remember how I used to do it. Typically you want them to be purely import, so try to make that work.