Find the difference between two sets, namely ${-1, 2, -5, -3 \sqrt{2}, \frac{15}{7}, \frac{13}{\sqrt{\pi }}} \setminus {-8, -2.1, \frac{13}{7}, -7, \frac{13}{\sqrt{\pi }}}$.

import math

fst = set((-1, 2, -5, -3*math.sqrt(2), (15/7), (13/(math.sqrt(math.pi))),))
snd = set((-8, -2.1, (13/7), -7, (13/(math.sqrt(math.pi))),))
print(fst - snd)
