[Python-ideas] Shorthand syntax for lambda functions that have a single parameter

Dominik Vilsmeier writes:

Hence the proposal is to add a new syntax via the new token `?`.

I find that unreadable. If you're going to add new syntax, either bite the bullet and just allow 'λ' for 'lambda' (my preference as an old lisper), or 'x → f(x)' (following MRAB's earlier suggestion). Or maybe omitting the function name from a def: 'def (x): f(x)'.