I was reading an image processing tutorial and came across this line of python:
gray = lambda rgb : np.dot(rgb[... , :3] , [0.299 , 0.587, 0.114])
What does the '...' operator do in this case?
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A Merii
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2`rgb[]` is not a list, it's a subscript/item access on `rgb`. – deceze Jan 23 '20 at 13:53
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Thanks for the clarification, I didn't know what the ... operator was called ellipses. So searching for it explicitly did not yield the correct answer. – A Merii Jan 23 '20 at 13:55
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1It's not an operator, it's a special, singleton value like `None` – juanpa.arrivillaga Jan 23 '20 at 14:09
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Thanks for the clarification – A Merii Jan 23 '20 at 15:28