Write a function that returns the number of '2's in the factorization of a number.  
For example,
```python
two_count(24)
```
should return 3, since the factorization of 24 is 2^3 x 3
```python
two_count(17280)
```
should return 7, since the factorization of 17280 is 2^7 x 5 x 3^3  
The number passed to two_count (twoCount)  will always be a positive integer greater than or equal to 1.
def two_count(n):
    if n%2 != 0:
        return 0
    else:
        return 1 + two_count(n//2)

def two_count(n):
    if n%2 != 0:
        return 0
    else:
        return 1 + two_count(n//2)
