Python 类型标注如何地道地指明某类型为 comparable/orderable？

推荐学习书目

› Learn Python the Hard Way

Python Sites

› PyPI - Python Package Index

› http://diveintopython.org/toc/index.html

› Pocoo

值得关注的项目

› PyPy

› Celery

› Jinja2

› Read the Docs

› gevent

› pyenv

› virtualenv

› Stackless Python

› Beautiful Soup

› 结巴中文分词

› Green Unicorn

› Sentry

› Shovel

› Pyflakes

› pytest

Python 编程

› pep8 Checker

Styles

› PEP 8

› Google Python Style Guide

› Code Style from The Hitchhiker's Guide

This topic created in 1997 days ago, the information mentioned may be changed or developed.

例如如下可复现例子：

from typing import TypeVar

T = TypeVar("T")

def is_bigger(a: T, b: T)->bool:
    return a > b

类型检查库 Pyright 报错如下：

Operator ">" not supported for types "T" and "T"

类型检查库 MyPy 报错如下：

Unsupported left operand type for > ("T")

检查库

typevar

Python

bash

4 replies • 2021-01-02 16:06:18 +08:00

ericls

Jan 2, 2021

给一个 `__lt__`

Trim21

Jan 2, 2021

https://gist.github.com/pawelrubin/a394702e4029809f30515621fc41ab1f

网上的例子

littleMaple

Jan 2, 2021

@Trim21 正解，谢谢大佬！看来使用 Python 类型标注需要额外封装的东西也不少啊 😂

abersheeran

Jan 2, 2021

@littleMaple 是的。还需慢慢发展。