import mod1
import mod2

# use mod1
print(mod1.sum(1, 2))
print(mod1.safe_sum(1, "aa"))
print(mod1.safe_sum(1, 2))

# use mod2
print(mod2.PI)
a = mod2.Math()
print(a.solv(2))
print(mod2.sum(mod2.PI, 4.4))
