Question

Python: Write the function pixelLuminance that takes 3 integers r, g, and b, each between 0 and 255 (inclusive), representing the red, green, and blue intensity of a pixel and returns the luminance of this pixel as an integer. The function expects each parameter r, g, and b to be an integer in the interval [0,255]. You should use assertions to enforce this constraint.

Answer 1

Thanks for the question.

Below is the code you will be needing  Let me know if you have any doubts or if you need anything to change.

Thank You !!

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# formula => luminance = (r * 0.3) + (g * 0.59) + (b * 0.11)

def pixelLuminance (r,g,b):
    assert 0<=r and r<=255
    assert 0<=g and g<=255
    assert 0<=b and b<=255
    return (r * 0.3) + (g * 0.59) + (b * 0.11)


print(pixelLuminance(0,0,0))
print(pixelLuminance(255,255,255))
print(pixelLuminance(128,128,128))
try:
    print(pixelLuminance(255,80,1000))
except AssertionError:
    print('Invalid input')