Check positive, negative or zero in Python

Enter number: 12
Positive

Enter number: -12
Negative

Enter number: 0
Zero

def main():
	num = float(input("Enter number: "))

	if num > 0:
		print("Positive")
	elif num < 0:
		print("Negative")
	else:
		print("Zero")


if __name__ == "__main__":
	main()