Whatever else the walrus operator is, it isn't "post-Guido Python". Guido was one of the authors of PEP 572, pushed for its acceptance, and was still BDFL when

Whatever else the walrus operator is, it isn't "post-Guido Python". Guido was one of the authors of PEP 572, pushed for its acceptance, and was still BDFL when it was officially accepted into Python (by Guido).