Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

Python implementation of cksum algorithm

Project Description

pycksum - A Python implementation of the cksum algorithm

The cksum algorithm generates a checksum for a stream of data. While cksum is not cryptographically strong, it can be used to validate the integrity of transferred files.

Pycksum includes a pure Python implementation of cksum as well as an efficient C extension that will automatically be used on platforms that support it.


Install from PyPi using pip, a package manager for Python:

$ pip install pycksum


The simplest way to use pycksum is to just give it a string:

import pycksum
ck = pycksum.cksum("Any string")

You can pass in a file or an iterable:

ck = pycksum.cksum( open("filename"))

ck = pycksum.cksum( ["This", "love", "is", "taking", "its", "toll", "on me"])

If you have a lot of data to process, it’s more memory-efficient to calculate the cksum incrementally:

c = pycksum.Cksum()
for data in input_fd:
ck = c.get_cksum()
sz = c.get_size()
Release History

Release History

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pycksum-0.4.2.tar.gz (15.7 kB) Copy SHA256 Checksum SHA256 Source Jul 27, 2016

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting