new_contents: """
  Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight).
  For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011, so the function should return 3.
  """
  
  class Solution(object):
      def hammingWeight(self, n):
          """
          :type n: int
          :rtype: int
          """
          return bin(n).count('1')
  
subject: Create Numberof1Bits.py