[Mlir-commits] [mlir] [MLIR][Python] fix python_test.py to not use `is` for type hint (PR #160718)

[llvmlistbot at llvm.org]

https://github.com/PragmaTwice approved this pull request.

Looks good : ) Just out of curiosity, what mechanism causes `Union` to be automatically converted into `|`?

https://github.com/llvm/llvm-project/pull/160718