fun with dicts

A Python self invoking dict func. In the example below, whatever `self.mode`, it will call the two named functions if the input to `.get()` is in the dict keys(), else the lambda: None :)

{
    "input": self.input_mode,
    "output": self.output_mode
}.get(self.mode, lambda: None)()

	>>> def g(): print("hooo")
	...
	>>> g()
	hooo
	>>> def h(): print("boo")
	...
	>>> {'i': g, 'k': h}.get('i', lambda: None)()
	hooo
	>>> {'i': g, 'k': h}.get('f', lambda: None)()
	>>>

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