try:
from add import Add
from multiply import Multiply
except ImportError as e:
print(e)
a = Add()
out = a.forward(10, 20)
print(out)
print(a)
# test for Multiply
m = Multiply()
out = m.forward(10, 20)
print(out) # 200
print(m) # 'Multiply(x=10, y=20)'
