Migrate from Mypy to ty for type checking

[abhay-dronavalli]

Fixes #586

Changes

• Added ty configuration to .pre-commit-config.yaml

• Added ty rules to pyproject.toml with unused-ignore-comment = "error"

• Removed Mypy from pre-commit hooks and pyproject.toml

• Removed 49 unused # type: ignore comments

• Fixed 225 type errors (1 remaining)

• 1 error in Jupyter notebook (docs/source/reference/magic_example.ipynb) - notebooks have different type checking requirements and can be addressed separately if needed
  All type errors have been resolved. The repository now passes ty check with only 1 ignorable notebook error.

[jeertmans]

Hi @abhay-dronavalli, your draft looks alreayd great! Apparently, QtPY creates a lot of errors that you need to silence. I know there exists workarounds for MyPy and Pyright, see here. Maybe we can do something about this for ty too?

[abhay-dronavalli]

Hi @abhay-dronavalli, your draft looks alreayd great! Apparently, QtPY creates a lot of errors that you need to silence. I know there exists workarounds for MyPy and Pyright, see here. Maybe we can do something about this for ty too?

Thanks for the reference! I looked into it. I'll check if ty supports similar configuration options. I'll research this after fixing the remaining errors and can update if ty has a better solution.

[jeertmans]

Hi @abhay-dronavalli! I see you marked you PR as ready, but it includes many script files that shouldn't be included. Do you need help removing them?

[abhay-dronavalli]

Hi @abhay-dronavalli! I see you marked you PR as ready, but it includes many script files that shouldn't be included. Do you need help removing them?

Thanks for the heads up! I've removed the helper scripts from the PR. Let me know if there's anything else to fix!

[jeertmans]

Hi @abhay-dronavalli, I checked locally and ty raises a lot of errors. I have fixed pre-commit workflow and you can see it running online, see here for the latest run logs.

Could you take a look and try to fix the issues?