[pypy-issue] Issue #3001: codecs.decode() unexpected interpreter error (pypy/pypy)

[abara_kedavra]

New issue 3001: codecs.decode() unexpected interpreter error
https://bitbucket.org/pypy/pypy/issues/3001/codecsdecode-unexpected-interpreter-error

abara_kedavra:

import codecs

bytes = codecs.decode(string, "hex")

"TypeError: 'hex' decoder returned 'bytes' instead of 'str'; use codecs.decode() to decode to arbitrary types"

But it must return bytes, and I expect bytes (?!) This is not a type error. Can someone explain why this is happening? There is no such problem with CPython. (+ Ubuntu 18.04 / PyCharm)