https://github.com/moscow-python-beer/final-class

🔒 Final classes for Python3!
https://github.com/moscow-python-beer/final-class

final-classes oop oop-principles python python3 python36

Last synced: 20 days ago
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🔒 Final classes for Python3!

• Host: GitHub
• URL: https://github.com/moscow-python-beer/final-class
• Owner: moscow-python-beer
• License: mit
• Created: 2018-07-11T09:17:25.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2021-07-21T07:41:26.000Z (almost 5 years ago)
• Last Synced: 2025-12-15T16:54:19.996Z (4 months ago)
• Topics: final-classes, oop, oop-principles, python, python3, python36
• Language: Python
• Homepage: https://pypi.org/project/final-class/
• Size: 813 KB
• Stars: 17
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

          
# final_class

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Final classes for `python3.6+`.

## Features

- No metaclass conflicts

- No runtime overhead

- No dependencies

- Type hints included, [PEP-561](https://www.python.org/dev/peps/pep-0561/) and [PEP-591](https://www.python.org/dev/peps/pep-0591/) compatible

- Designed to be as simple as possible

## Why?

In languages like `java` we have a nice way

to restrict subclassing any class by making it `final`:

```java

public final class SomeClass {

  // ...

}

```

In `python` we don't have such feature out of the box.

That's where `final_class` library comes in!

This package works perfectly with `@final` from `typing`.

So, with `final_class` you will have both type-checking and runtime checks.

## Installation

```bash

pip install final_class

```

## Usage

```python

from final_class import final

@final

class Example(object):  # You won't be able to subclass it!

    ...

class Error(Example):  # Raises `TypeError`

    ...

```

## More?

Do you want more? Check out:

- [1-minute guide to real constants in Python](https://sobolevn.me/2018/07/real-python-contants)

## License

MIT.