> No minor tweak to the exception message will make this go away.  For understanding to occur, the only way to forward is to learn a bit about hashability.  That is a step that every beginner must take.

This is a derisive and beginner-hostile response that ignores half of what's been said by other participants in this thread.

> Also the error message itself is easily Googled

Yeah, the first thing that comes up is ~4k Stack Overflow entries where people are really confused by the error message.