Question

I came across an exercise in "Think Python", and I couldn’t figure out how to do it.

The exercise:

1. Write a function named is_triangle that takes three integers as arguments, and that prints either “Yes” or “No,” depending on whether you can or cannot form a triangle from sticks with the given lengths.

And of course:

If any of the three lengths is greater than the sum of the other two, then you cannot form a triangle. Otherwise, you can3.

Answer 1

There are plenty of ways to do this. Here is one:

def is_triangle(a, b, c):
    if (a > b + c) or (b > a + c) or (c > a + b):
        print "No"
    else:
        print "Yes"