DHI / DHI/python-package-development

Deprecations

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![Image](https://github.com/user-attachments/assets/7c66a9c7-b65f-4a05-9607-4ef111061f93)

https://docs.python.org/3/library/warnings.html#warnings.deprecated
*Added in version 3.13: See [PEP 702](https://peps.python.org/pep-0702/).*

```python
from warnings import deprecated

@deprecated("Use the new way instead")
def the_old_way():
print("God dag!")

def main():
print("Hello from foo!")

if __name__ == "__main__":
main()
the_old_way()
```

```bash
$ uv run mypy main.py --enable-error-code=deprecated
main.py:15: error: function main.the_old_way is deprecated: Use the new way instead [deprecated]
Found 1 error in 1 file (checked 1 source file)
```

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