Re:An Update on Pytype
by sito42 on Wednesday August 20, 2025 @02:02PM
(#44964441)
astral bags another one
[ Parent
| on HN ]
Is ty more mature than pyright or mypy?
I'm currently using pyright, but I'm going to migrate once ty and its vscode extension are given the "production ready" greenlight.
at this stage I get very few false positives and it's so much easier to configure and use than pyright
ty still doesn't understand match + typing.assert_never pattern, last barrier for me to switching.
Personal experience: if you use injector[1] with NewType so that you can give your primitive types a meaning and add them to your injection stack it completely fails. For example:
```python
ModelName = NewType("ModelName", str)
# You bind your string within a module: binder.bind(ModelName, to=ModelName(parsed_args.model_name))
# When you need it: model_name = injector.get(ModelName) # Here it fails, saying that you need "concrete" types or something similar
```
So while it is great already it definitely still has many rough edges still. But it is to be expected from alpha releases