{
    "info": {
        "author": "Serge Matveenko",
        "author_email": "lig@countzero.co",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: MIT License",
            "Operating System :: OS Independent",
            "Programming Language :: Python :: 3.7",
            "Programming Language :: Python :: 3.8",
            "Programming Language :: Python :: 3 :: Only",
            "Topic :: Software Development :: Libraries :: Python Modules",
            "Typing :: Typed"
        ],
        "description": "# Python Strict Interfaces\n\n\n## Installation\n\n```shell\npip install strict-interfaces\n```\n\n\n## Design Goals\n\n* Be as strict as possible\n* Fail on import time\n* Do not mess with `object` and/or `type` inheritance\n* Possibility to integrate in CPython Core\n* Ability to use \"out of the box\" regardless support in an interpreter\n\n\n## Features\n\n* Special keyword `implements` on the class definition\n* Multiple interface implementation\n* Implicit interface implementation\n* Interface inheritance with overloading being restricted\n* Special `isimplementation` function similar to `issubclass`\n* Partial `issubclass` support (see below)\n* It's restricted to create an interface instance\n* It's restricted to inherit from `object` and `interface` at the same time\n\n\n## Usage\n\n### Explicit implementation\n\n```python\nclass TestInterface(interfaces.interface):\n    def method(self, arg: typeT1) -> typeT2:\n        pass\n\nclass TestClass(interfaces.object, implements=[TestInterface]):\n    def method(self, arg: typeT1) -> typeT2:\n        pass\n```\n\n### Raises when is not implemented \n\n```python\nclass TestInterface(interfaces.interface):\n    def method(self, arg):\n        pass\n\nclass TestClass(interfaces.object, implements=[TestInterface]):\n    pass\n```\n\n### Implicit implementation and run-time check\n\n```python\nclass TestInterfaceA(interfaces.interface):\n    def method_a(arg: typeT1) -> typeT1:\n        pass\n\nclass TestInterfaceB(interfaces.interface):\n    def method_b(arg: typeT2) -> typeT2:\n        pass\n\nclass TestClass:\n    def method_a(arg: typeT1) -> typeT1:\n        pass\n\n    def method_b(arg: typeT2) -> typeT2:\n        pass\n\nassert interfaces.isimplementation(TestClass, (TestInterfaceA, TestInterfaceB))\n```\n\n### `isimplementation` checks whether all interfaces are implemented \n\n```python\nclass TestInterfaceA(interfaces.interface):\n    def method_a(arg: typeT1) -> typeT1:\n        pass\n\nclass TestInterfaceB(interfaces.interface):\n    def method_b(arg: typeT2) -> typeT2:\n        pass\n\nclass TestClass:\n    def method_a(arg: typeT1) -> typeT1:\n        pass\n\n# NOTE: In this case `isimplementation` behaves different than `issubclass`\nassert not interfaces.isimplementation(TestClass, (TestInterfaceA, TestInterfaceB))\nassert issubclass(TestClass, (TestInterfaceA, TestInterfaceB))\n```\n\n\n## Contributing\n\nPull requests, feature requests, and bug reports are always welcome!\n\n[github.com/lig/python-interfaces](https://github.com/lig/python-interfaces)\n",
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