Ken Jin <kenjin4...@gmail.com> added the comment:
A possible simple fix is to change these lines https://github.com/python/cpython/blob/main/Objects/unionobject.c#L294-L301 to: ``` return ( is_typevar(obj) | is_new_type(obj) | is_special_form(obj) | PyType_Check(obj) | PyObject_TypeCheck(obj, &Py_GenericAliasType) | (int)(type == &_Py_UnionType)); ``` However, that may slow down union a little since we lose the short-circuiting that `||` provides over `|`, and all checks have to be evaluated. Checking each result individually and mimicking the short circuiting behavior works too, so I did that. What do you think Serhiy? ---------- stage: patch review -> _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44483> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
