What it means 0xFF == ord('q'):

Question

if cv2.waitKey(1) & 0xFF == ord('q'):
break
I want explanation for this code.

Answer 1

-->ord('q') returns the Unicode code point of q

-->cv2.waitkey(1) returns a 32-bit integer corresponding to the pressed key

-->& 0xFF is a bit mask which sets the left 24 bits to zero, because ord() returns a value betwen 0 and 255, since your keyboard only has a limited character set

-->Therefore, once the mask is applied, it is then possible to check if it is the corresponding key.
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