def reverse_list (num_list):
 try:
 if num_list.isdigit() == True:
 return num_list[::-1]
 elif num_list < 0:
 return "Negative numbers aren't allowed!" 
 except ValueError:
 return "Invalid input!" 
user_list = list (int (input ("Please enter ten random positive numbers: " )))
print (reverse_list (user_list))