Get an abbreviation for a function parameter.

def _yield_abbreviations_for_parameter(param, kwargs):
    """Get an abbreviation for a function parameter."""
    name = param.name
    kind = param.kind
    ann = param.annotation
    default = param.default
    not_found = (name, empty, empty)
    if kind in (Parameter.POSITIONAL_OR_KEYWORD, Parameter.KEYWORD_ONLY):
        if name in kwargs:
            value = kwargs.pop(name)
        elif ann is not empty:
            warn("Using function annotations to implicitly specify interactive controls is deprecated. Use an explicit keyword argument for the parameter instead.", DeprecationWarning)
            value = ann
        elif default is not empty:
            value = default
        else:
            yield not_found
        yield (name, value, default)
    elif kind == Parameter.VAR_KEYWORD:
        # In this case name=kwargs and we yield the items in kwargs with their keys.
        for k, v in kwargs.copy().items():
            kwargs.pop(k)
            yield k, v, empty