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jump-consistent-hash 3.0.1

Implementation of the Jump Consistent Hash algorithm

Jump Consistent Hash

Python implementation of the jump consistent hash algorithm by John Lamping and Eric Veach[1]. Tested on Python 2.6, 2.7 and 3.4+.


To install Jump Consistent Hash, simply run this simple command in your terminal of choice:

$ pip install jump-consistent-hash

Unless running PyPy the installation will try to compile the C++ reference implementation (unless an appropriate wheel is available). If it fails it will fallback to the pure Python implementation which is about 10x slower on CPython.


>>> import jump
>>> jump.hash(256, 1024)

If you want to use a str as a key instead of an int, you can pass it through a hash function to compute a real key. Here’s a couple of examples using Python 3:

>>> import hashlib
>>> int(hashlib.md5(b'').hexdigest(), 16)

>>> int(hashlib.sha1(b"").hexdigest(), 16)

>>> import binascii
>>> binascii.crc32(b'') & 0xffffffff

>>> abs(hash(''))
File Type Py Version Uploaded on Size
jump_consistent_hash-3.0.1-cp27-cp27m-macosx_10_13_x86_64.whl (md5) Python Wheel cp27 2017-08-27 6KB
jump_consistent_hash-3.0.1-cp36-cp36m-macosx_10_13_x86_64.whl (md5) Python Wheel cp36 2017-08-27 6KB
jump_consistent_hash-3.0.1.tar.gz (md5) Source 2017-08-27 4KB