Takes 2 required arguments, frame_args and arg_list. Parses a frame's arguments, returning either the provided named arguments in arg_list if found or the positional parameters instead if not. This is designed to work around the stripping of values that takes place for defined parameters which could be important.
As an example, the calls
Takes 1 required argument boolean_str. Turns the input into a true/false boolean value based on the input. Will error if given anything other than a string or boolean value.
To be invoked from inside a template instead of a module. Determines if a certain parameter is defined in the parent frame's arguments.