rison

library2.0.1pypypi✓ verified 89d ago

Python encoder/decoder for the Rison data serialization format (similar to JSON but URI-safe). Current version 2.0.1, with a modernized codebase that publishes under the `rison` package instead of the legacy `prison`. Release cadence is irregular.

serialization data

pip install rison

github ↗package ↗

INSTALL

IMPORT

SIG · RISON

rison

serializationpythonv2.0.1

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.

rison

✓ import rison

✗ import prison

The library was renamed from 'prison' to 'rison' in v2.0.0. Using 'prison' imports the old, unmaintained package.

Basic usage of rison for encoding and decoding.

import rison # Encode a Python dict to Rison string obj = {"name": "test", "count": 42} encoded = rison.dumps(obj) print(encoded) # (name:test,count:42) # Decode a Rison string back to Python object decoded = rison.loads(encoded) print(decoded) # {'name': 'test', 'count': 42}

Debug

Known issues

breakingv2.0.0 renamed the PyPI package from 'prison' to 'rison' and changed the top-level import from 'prison' to 'rison'. Existing code using 'import prison' will break.

fix

Update imports to 'import rison' and reinstall with 'pip install rison'.

affects: >=2.0.0

deprecatedThe old 'prison' package on PyPI is unmaintained and should not be used.

fix

Switch to 'rison' version 2.0.0 or later.

affects: <2.0.0

gotchaRison does not support all Python types. For example, None is not supported and will raise an error.

fix

Use '~' to represent null in rison strings, or filter None values before encoding.

affects: all

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'rison'

The package was not installed or an older version (prison) was installed instead.

fix

Run 'pip install rison'.

ImportError: cannot import name 'dumps' from 'rison'

Using an outdated import pattern. The correct function is 'rison.dumps' and 'rison.loads'.

fix

Use 'import rison; rison.dumps(...)' instead of 'from rison import dumps'.

Upgrade

Version history

2.0.1latest on PyPI · released Apr 26, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/betodealmeida/python-rison ↗

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