Shorten Keyword Arguments with Implicit Notation: foo(a=a, b=b) to foo(.a, .b)

[kknechtel (Karl Knechtel)]

@mousehand

Not sure if this has been discussed here before, but this is the idea.

We’ve seen the idea as recently as a few weeks ago:

Allow identifiers as keyword arguments at function call site (extension of PEP 3102?)

It is common to see keyword arguments passed values from identifiers (typically local variables) with the same name as the argument. Here’s an example from the pytorch library: func(params, d_p_list, momentum_buffer_list, weight_decay=weight_decay, momentum=momentum, lr=lr, dampening=dampening, nesterov=nesterov, has_sparse_grad=has_sparse_grad, maximize=maximize) My proposal is to allow these keyword arguments to be passed as e.g. weight_decay inst…