Over in typing-sig we're considering a new syntax for callable *types*, which would look like (int, int, str) -> float. A matching syntax for lambda would use a different arrow, e.g. (x, y, z) => x+y+z.

On Wed, Sep 29, 2021 at 11:51 AM Stephen J. Turnbull <stephenjturnbull@gmail.com> wrote:

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)'.

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