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hashy

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Another hash library, but with a twist. It provides a simple interface to generate hashes for strings, files, dicts, lists and sets. It also provides a decorator to cache the results of a function to disk and (optionally) memory.

Installation

pip install hashy

Introduction

hashy provides an md5, sha256, sha512 or crc64nvme for string, file, dict, list and set.

String and file hashes are conventional and can be compared to other implementations. For example, you can go to an online hash calculator for "a" and get the same hash as hashy generates.

crc64nvme is the CRC-64/NVME checksum (as used by the NVMe specification and AWS S3 object integrity checking), returned as a 16-character hex string.

Hashes for complex data types like dict, list and set are specific to hashy.

Supports multithreading and multiprocessing, via the sqlitedict library. While the sqlite database itself is not thread-safe/process-safe, the sqlitedict library provides a thread-safe/process-safe interface.

cachy

hashy also provides cachy, a decorator that can be used to persistently cache the results of a function to disk and (optionally) memory. It is similar to @functools.cache, except:

  • Persistent (saved to local disk in a sqlite database)
    • Optionally can be saved to a user-specified directory, otherwise it's the usual cache directory for the OS
  • Optional user-specified cache life.
  • Doesn't require arguments be frozen and/or pickle-able. Uses hashy to create a hash of the arguments.

Example


from hashy import get_string_sha256, cachy

print(get_string_sha256("a"))  # prints ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb

@cachy()
def func(a):
    return a + a

print(func(2))  # prints 4

Metadata

Release files for hashy 0.14.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distribution (wheel)

Table of built distributions (wheels) for hashy 0.14.1
File Interpreter ABI Platform
hashy-0.14.1-py3-none-any.whl Python 3 none any Details

Release files / hashy-0.14.1-py3-none-any.whl

Download URL hashy-0.14.1-py3-none-any.whl
Size 17.0 kB
Tags Python 3
SHA-256 checksum
How to use checksums
314ed4444a1c7abaea547dd8af340747900d4848a4cdf84ca489a7b3900b3355
BLAKE2b-256 checksum
How to use checksums
48eec53730b0da10b86306a12663f1883b888c93ab46fae0a28eaa4c7fae534c
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Uploaded via twine/6.2.0 CPython/3.13.12

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