bloom-filter2 2.0.0

Usage

The user specifies the desired maximum number of elements and the desired maximum false positive probability, and the module calculates the rest.

from bloom_filter2 import BloomFilter

# instantiate BloomFilter with custom settings,
# max_elements is how many elements you expect the filter to hold.
# error_rate defines accuracy; You can use defaults with
# `BloomFilter()` without any arguments. Following example
# is same as defaults:
bloom = BloomFilter(max_elements=10000, error_rate=0.1)

# Test whether the bloom-filter has seen a key:
assert "test-key" not in bloom

# Mark the key as seen
bloom.add("test-key")

# Now check again
assert "test-key" in bloom