Enable `explicit-override` by default in `strict` mode

Feature

Tracking issue for enabling

[tool.mypy]
enable_error_code = ["explicit-override"]

When

strict = true

Pitch

As explained in PEP 698, strict enforcement of @override has many benefits.

When the Mypy developers feel that @override usage has had enough time for adoption in the community, enabling this by default when the user opts into strict mode would be helpful.

Related Discussions

• #14072
• #14609
• #1888

首先检查 [tool.mypy] 中的 strict = true 设置会扩展为哪些已启用的错误代码，同时查看讨论 #14072、#14609 和 #1888。确认采用决定，更新 strict 模式的行为及其测试，使 explicit-override 默认启用，并验证现有的显式配置仍然正确。