Since Python 3.10, io.OpenWrapper is no longer needed: just use open(). See issue #87846 for the long rationale. I modified staticmethod() in Python 3.10, so a static method is now a callable object.

It was deprecated in 2 Python versions (3.10 and 3.11), so it can now be removed (PEP 387).

I'm writing a PR to remove it.