':param capacity: How many items you want to store, eg. 10000
:param error_rate: The acceptable false positive rate, eg. 0.001'

def __init__(self, capacity, error_rate):

    GenericBloomFilter.__init__(self, capacity, error_rate)
    temp_file = self.get_temp_file()
    self.bf = WrappedBloomFilter(capacity, error_rate, temp_file)
