Support default values of named parameters

[SamWilsn]

docc/src/docc/plugins/python/cst.py

Lines 667 to 669 in f5e919e

	if cst_param.default is not None:
	# TODO: parameter default
	logging.warning("parameter default values not implemented")

docc/src/docc/plugins/python/templates/html/parameter.html

Line 24 in f5e919e

{#- TODO: default value -#}

We should make an attempt to display (or at least indicate) that there is a default value for named parameters. For example, the following loses the =1 after rendering:

def foo(a=1):
    pass

The smallest improvement we can make here would be to render an ellipsis:

The best version of this would be to actually render the default value. Unfortunately, this is non-trivial. For example, this is valid:

def a(b=[str(x + 50) for x in [1, 2, 3]]):
    print(b)

Perhaps for simple values/literals, we render them, but for more complex ones we leave them out?

[fabiola29298]

GM! Can I take up this issue?

[SamWilsn]

Sure thing. Once you've taken a look at the source, let me know what approach you're going to take