Syntactic sugar to encourage use of named arguments

[ehomrich (Emerson)]

There are some discussions about this idea, but there was no consensus/conclusion:

Shorthand notation of dict literal and function call

It is sometimes tedious to write a dictionary in Python. For example, def register_user(first, last, addr1, addr2): d = {'first': first, 'last': last, 'addr1': addr1, 'addr2': addr2,} register(d) The dict literal above contains a lot of duplicated words and quotation marks. JavaScript has shorthand notation of property names. d = {first, last, addr1, addr2} In Python, {first, last, addr1, addr2} yields set object. So, how about adding a new notation to Pyt…

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…