Power of Two(Easy)

Given an integer, write a function to determine if it is a power of two.

Python 3 Code

class Solution:
    # @param {integer} n
    # @return {boolean}
    def isPowerOfTwo(self, n):
        return n > 0 and (n & (n - 1)) == 0

test =  Solution()
print(test.isPowerOfTwo(8))