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1.4 KiB
1.4 KiB
PyTraits
Introduction
PyTraits is a Python library that provides functionality similar to Rust traits. It allows you to define protocols using impl
or trait
annotations to specify the behavior that classes should implement.
Installation
You can install PyTraits using pip:
pip install pytraits
Usage
使用 PyTraits,首先需要使用 trait
注解定义一个协议:
from typing import runtime_checkable
@runtime_checkable
class Printable:
def print(self):
pass
然后,可以使用impl
或trait
装饰器为已定义的类实现该协议:
from pytraits import impl, trait
class MyClass1: pass
@impl(Printable)
class MyClassImplPrintable(MyClass1):
def print(self):
print("从 MyClass 打印")
class MyClass2: pass
@trait
class MyClassTraitPrintable(MyClass2, Printable):
def print(self):
print("从 MyClass2 打印")
mc1: MyClass1 | Printable = MyClass1()
mc2: MyClass2 | Printable = MyClass2()
mc1.print()
mc2.print()
现在,MyClass
实现了 Printable
协议,可以相应地使用。
Contributing
Contributions are welcome! If you find any issues or have suggestions for improvement, please open an issue or submit a pull request on GitHub.
License
This project is licensed under the MIT License - see the LICENSE file for details.