[issue40313] bytes.hex(sep, bytes_per_sep) is many times slower than manually inserting the separators

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Thanks Dennis for the optimization!

FYI I also pushed another optimization recently:

commit 455df9779873b8335b20292b8d0c43d66338a4db
Author: Victor Stinner <vstinner at python.org>
Date:   Wed Apr 15 14:05:24 2020 +0200

    Optimize _Py_strhex_impl() (GH-19535)
    
    Avoid a temporary buffer to create a bytes string: use
    PyBytes_FromStringAndSize() to directly allocate a bytes object.

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nosy: +vstinner
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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