new_contents: """Example how to use Counting Bloom Filter."""
  
  from pdsa.membership.counting_bloom_filter import CountingBloomFilter
  
  
  LOREM_IPSUM = (
      "Lorem ipsum dolor sit amet, consectetur adipiscing elit."
      " Mauris consequat leo ut vehicula placerat. In lacinia, nisl"
      " id maximus auctor, sem elit interdum urna, at efficitur tellus"
      " turpis at quam. Pellentesque eget iaculis turpis. Nam ac ligula"
      " ut nunc porttitor pharetra in non lorem. In purus metus,"
      " sollicitudin tristique sapien."
  )
  
  if __name__ == '__main__':
      bf = CountingBloomFilter(80000, 4)
  
      print(bf)
      print("Bloom filter uses {} bytes in the memory".format(bf.sizeof()))
  
      print("Filter contains approximately {} elements".format(bf.count()))
  
      print("'Lorem' {} in the filter".format(
          "is" if bf.test("Lorem") else "is not"))
  
      words = set(LOREM_IPSUM.split())
      for word in words:
          bf.add(word.strip(" .,"))
  
      print("Added {} words, in the filter approximately {} elements".format(
          len(words), bf.count()))
  
      print("'Lorem' {} in the filter".format(
          "is" if bf.test("Lorem") else "is not"))
  
      print("Delete 'Lorem' from the filter")
      bf.remove("Lorem")
  
      print("In the filter approximately {} elements".format(bf.count()))
      print("'Lorem' {} in the filter".format(
          "is" if bf.test("Lorem") else "is not"))
  
subject: Create example for Counting Bloom Filter