multimapping

library5.1pypypi✓ verified 82d ago

Special MultiMapping objects used in Zope, currently at version 5.1. Provides ordered and unordered mappings supporting multiple values per key (like `NestedMultiMapping` and `IOrderedMultiMapping`). Release cadence is low, with occasional maintenance updates. Requires Python >=3.10.

serialization database

pip install multimapping

github ↗package ↗changelog ↗

INSTALL

IMPORT

SIG · MULTIMAPPING

multimapping

serializationpythonv5.1

Install

21.9s avg

Import

—

Disk

16MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v5.1 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

build_error

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 21.9s · import 0.000s · 19MB

16MB installed

● package 16MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

MultiMapping

✓ from MultiMapping import MultiMapping

✗ from multimapping import MultiMapping

Base

✓ from MultiMapping import Base

pyMultiMapping

✓ from MultiMapping import pyMultiMapping

Basic usage: create MultiMapping and NestedMultiMapping, add multiple values per key.

from multimapping import MultiMapping, NestedMultiMapping # Create a simple MultiMapping mm = MultiMapping() mm['key1'] = 'value1' mm.add('key1', 'value2') print(mm.getall('key1')) # ['value1', 'value2'] # NestedMultiMapping stores keys as ordered tuples nmm = NestedMultiMapping() nmm[('a', 'b')] = 1 print(nmm[('a', 'b')]) # 1

Debug

Known issues

breakingIn version 5.0, the package was renamed from 'zope.multimapping' to just 'multimapping'. All imports must be updated.

fix

Replace 'from zope.multimapping import ...' with 'from multimapping import ...'

affects: >=5.0

deprecatedThe 'IUnorderedMultiMapping' interface is deprecated and will be removed in a future version. Use 'IMultiMapping' instead.

fix

Use 'IMultiMapping' from 'multimapping.interfaces'

affects: >=5.0

gotchaMethods like 'getall' return a list, not a tuple. Relying on immutability can break code.

fix

If you need an immutable sequence, convert the result to tuple: tuple(mm.getall('key1'))

affects: all

Upgrade

Version history

5.1latest on PyPI · released Jan 23, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

6 hits · last 30 days

node

Resources

githubhttps://github.com/zopefoundation/MultiMapping ↗

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

changeloghttps://github.com/zopefoundation/MultiMapping/blob/master/CHANGES.txt ↗