Python's syntax is already pretty ponderous, this kind of thing pushes it rapidly toward bash-like incomprehensibility. I've been a big fan of the language for years but this kind of thing makes me consider jumping to Lua or something which is more sparing with new complicated sigils.
How does this reduce comprehensibility? In cases where you're doing matrix muls, "a @ b" is way clearer than "a.dot(b)". In other cases, infix "@" won't appear.
I actually find Python's syntax to be extremely clear, even to someone who hasn't written much Python. Can you give some examples of where it's particularly incomprehensible?
