[Python] So I have been trying to make a triangle identifier program in Python, This basic...

The Program rightfully gives the identification for all cases of triangles falling into the categories of equilateral, isoscles and scalene. It also identifies if the triangle is actually a valid triangle or not. This program however fails to identify a triangle of sides 3, 4, 5 as a scalene triangle. I have given the appropriate indentations but at the same time fail to debug the program

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I was expecting the input of 3, 4, 5 to be a scalene triangle however this program says that the above sides do not form a triangle at all

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