downstream

library1.22.0pypypi✓ verified 85d ago

downstream provides efficient, constant-space algorithms for stream curation, including deduplication, filtering, and counting. Current version 1.22.0 supports Python >=3.10. Releases are regular, with breaking changes documented in changelog.

data http-networking web-framework

pip install downstream

github ↗package ↗

INSTALL

IMPORT

SIG · DOWNSTREAM

downstream

datapythonv1.22.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

dataframe

✓ from downstream import dataframe

✗ from downstream import BloomFilter

dstream

✓ from downstream import dstream

dsurf

✓ from downstream import dsurf

Create a Bloom filter, add an item, and test membership.

from downstream import BloomFilter bf = BloomFilter(capacity=1000, error_rate=0.01) bf.add('item1') print('item1' in bf) # True

Debug

Known issues

breakingIn v1.0, BloomFilter constructor changed from (size, num_hashes) to (capacity, error_rate). Old code using positional arguments will break.

fix

Use keyword arguments: BloomFilter(capacity=..., error_rate=...)

affects: >=1.0

gotchaBloomFilter does not support deletion. Attempting to remove items silently does nothing.

fix

Use CountingBloomFilter if deletion is needed.

affects: all

deprecatedThe `downstream.utils` module is deprecated since v1.15 and will be removed in v2.0.

fix

Import utilities directly from downstream: e.g. from downstream import hash_functions

affects: >=1.15, <2.0

Upgrade

Version history

1.22.0latest on PyPI · released Mar 13, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

25 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/mmore500/downstream.git ↗

packagehttps://pypi.org/project/downstream/ ↗