Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
Right, they shouldn't be just aliases, but Constant subclasses with __new__
which return Constant and __instancecheck__ which checks the type of the value.
And the Constant class should have writable properties n and s. All these
operations should emit a deprecation warning at runtime. Even this doesn't
preserve perfect compatibility. issubclass(type(node), Num) will not work, and
compile(Num('123')) will raise en exception in the Num constructor instead of
compile().
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue32892>
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