def switcher(func_name, val1, val2):
if func_name == "Add":
result = val1 + val2
elif func_name == "Subtract":
result = val1 - val2
elif func_name == "Multiply":
result = val1 * val2
elif func_name == "Divide":
result = val1 / val2
return result
print( switcher("Subtract", 1, 2) )