SQLAlchemy-Continuum

Versioning and auditing extension for SQLAlchemy.

Features

Creates versions for inserts, deletes and updates
Does not store updates which don’t change anything
Supports alembic migrations
Can revert objects data as well as all object relations at given transaction even if the object was deleted
Transactions can be queried afterwards using SQLAlchemy query syntax
Query for changed records at given transaction
Temporal relationship reflection. Version object’s relationship show the parent objects relationships as they where in that point in time.
Supports native versioning for PostgreSQL database (trigger based versioning)

QuickStart

pip install SQLAlchemy-Continuum

In order to make your models versioned you need two things:

Call make_versioned() before your models are defined.
Add __versioned__ to all models you wish to add versioning to

import sqlalchemy as sa
from sqlalchemy_continuum import make_versioned


make_versioned(user_cls=None)


class Article(Base):
    __versioned__ = {}
    __tablename__ = 'article'

    id = sa.Column(sa.Integer, primary_key=True, autoincrement=True)
    name = sa.Column(sa.Unicode(255))
    content = sa.Column(sa.UnicodeText)


article = Article(name='Some article', content='Some content')
session.add(article)
session.commit()

# article has now one version stored in database
article.versions[0].name
# 'Some article'

article.name = 'Updated name'
session.commit()

article.versions[1].name
# 'Updated name'


# lets revert back to first version
article.versions[0].revert()

article.name
# 'Some article'

For completeness, below is a working example.

from sqlalchemy_continuum import make_versioned
from sqlalchemy import Column, Integer, Unicode, UnicodeText, create_engine
from sqlalchemy.orm import Session, configure_mappers, declarative_base

make_versioned(user_cls=None)

Base = declarative_base()
class Article(Base):
    __versioned__ = {}
    __tablename__ = 'article'
    id = Column(Integer, primary_key=True, autoincrement=True)
    name = Column(Unicode(255))
    content = Column(UnicodeText)

configure_mappers()
engine = create_engine('sqlite://')
Base.metadata.create_all(engine)
session = Session(engine)

article = Article(name='Some article', content='Some content')
session.add(article)
session.commit()
article.versions[0].name
article.name = 'Updated name'
session.commit()
article.versions[1].name
article.versions[0].revert()
article.name

Resources

More information

Metadata

Release files for SQLAlchemy-Continuum 1.8.0

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Source distribution (sdist)

Source distribution for SQLAlchemy-Continuum 1.8.0
File	Size	Uploaded
sqlalchemy_continuum-1.8.0.tar.gz	96.3 kB	Sep 29, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for SQLAlchemy-Continuum 1.8.0
File	Interpreter	ABI	Platform	Reset
sqlalchemy_continuum-1.8.0-py3-none-any.whl 54.1 kB Sep 29, 2026	Python 3	none	any	Details

Total release size: 150.4 kB

Release files / sqlalchemy_continuum-1.8.0.tar.gz

Download URL	sqlalchemy_continuum-1.8.0.tar.gz
Size	96.3 kB
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Publishing platform: GitHub Actions
Publishing repository: github.com/sqlalchemy-continuum/sqlalchemy-continuum
Publishing commit: github.com/sqlalchemy-continuum/sqlalchemy-continuum/tree/a84e82866450d4eb82ba356d922b42051af31724

Workflow

Publishing configuration: github.com/sqlalchemy-continuum/sqlalchemy-continuum/blob/a84e82866450d4eb82ba356d922b42051af31724/.github/workflows/publish.yml
Publishing logs: github.com/sqlalchemy-continuum/sqlalchemy-continuum/actions/runs/36509844945/attempts/1

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Subject: sqlalchemy_continuum-1.8.0.tar.gz
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Release files / sqlalchemy_continuum-1.8.0-py3-none-any.whl

Download URL	sqlalchemy_continuum-1.8.0-py3-none-any.whl
Size	54.1 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`b5e83ddef5306cc8ee9ece6550298ea52673a9b5194ebfe96ebfc1170e573820`
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Upload date	Sep 29, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	Yes
Uploaded via	`twine/7.0.0 CPython/3.13.14`

Provenance

Identity

Publishing platform: GitHub Actions
Publishing repository: github.com/sqlalchemy-continuum/sqlalchemy-continuum
Publishing commit: github.com/sqlalchemy-continuum/sqlalchemy-continuum/tree/a84e82866450d4eb82ba356d922b42051af31724

Workflow

Publishing configuration: github.com/sqlalchemy-continuum/sqlalchemy-continuum/blob/a84e82866450d4eb82ba356d922b42051af31724/.github/workflows/publish.yml
Publishing logs: github.com/sqlalchemy-continuum/sqlalchemy-continuum/actions/runs/36509844945/attempts/1

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Subject: sqlalchemy_continuum-1.8.0-py3-none-any.whl
SHA-256 checksum: b5e83ddef5306cc8ee9ece6550298ea52673a9b5194ebfe96ebfc1170e573820 Verifying attestations