# use *numbers for a variable number of arguments
def product(*numbers):
	# initialize accumulator to 1 to calculate
	# product
	result = 1
	for num in numbers:
		result *= num
	return result

# bonus! not necessary, but converting a series of
# numbers into a string:
def args_to_str(*args):
	s = ''
	for i in range(len(args)):
		s += str(args[i])
		if i != len(args) - 1:
			s += ' * '
	return s

print('The product of ' + args_to_str(2, 3, 4) + ' is ' + str(product(2, 3, 4)))
print('The product of ' + args_to_str(-10, 10, 5, 5) + ' is ' + str(product(-10, 10, 5, 5)))
print('The product of ' + args_to_str(100) + ' is ' + str(product(100)))