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Vampire Numbers
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Our loose definition of [Vampire Numbers](http://en.wikipedia.org/wiki/Vampire_number) can be described as follows:
```python
6 * 21 = 126
# 6 and 21 would be valid 'fangs' for a vampire number as the 
# digits 6, 1, and 2 are present in both the product and multiplicands
10 * 11 = 110
# 110 is not a vampire number since there are three 1's in the
# multiplicands, but only two 1's in the product
```
Create a function that can receive two 'fangs' and determine if the product of the two is a valid vampire number.
def vampire_test(x, y):
    return sorted(list(str(x) + str(y))) == sorted(list(str(x*y)))
def vampire_test(x, y):
    return sorted(list(str(x) + str(y))) == sorted(list(str(x*y)))