Find the difference between two sets, namely ${-9, -\frac{12}{\pi }, 4.94, 2} \setminus {-3, -\sqrt{3}, 4.94, -9, 9, -\frac{12}{\pi }, 3}$.

import math

fst = set((-9, -(12/math.pi), 4.94, 2,))
snd = set((-3, -math.sqrt(3), 4.94, -9, 9, -(12/math.pi), 3,))
print(fst - snd)
