Ball pythons would be less work in general.
Bearded Dragons call for alot of work. You will need at least a 55 gallon tank for 1 adult, UVB light for vitamin D3, and a Basking light to help maintain high temps so your beardie can digest its food.
Be prepard to cut vegies and fruits at least once a day and powder them with calcium supplement. Crickets, Wax worms, and Mealworms would also need to be apart of your beardies diet so make sure you have a supply of at least one of those three listed.
Impaction is a very common problem in beardies which is caused by feeding to big of food items to small beardies. This can result in a temporary paralysis until the blockage is passed.
Although this sounds like a lot of work it is a joy to keep Bearded Dragons as pets. Basic knowledge and a little free time can insure your beardie lives a long healthy life.
If you have the time and money i would get a beardie but if not then a ball python would be the better choice. Whichever one you choose be sure to read as many books, care sheets and ask as many questions as you can before you make a purchase.