aenum
Advanced Enumerations (compatible with Python's stdlib Enum), NamedTuples, and NamedConstants
Decision gist · record as of 2026-08-14
Yes. aenum is actively maintained, has no security vulnerabilities, carries a permissive BSD license, and installs with zero dependencies. It's worth installing if you need enum features beyond the standard library (bitwise flags, auto-numbering, ordered comparisons) or if you support older Python versions. Be aware that version 3.1 removed AutoNumber and AutoValue and changed custom Enum settings—review the changelog if upgrading from earlier versions.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction: pure Python wheels for both Python 2 and 3, no runtime dependencies, and actively maintained with a recent commit on 2026-06-11.
License · maintenance · safety
BSD License (permissive) — BSD License (permissive) means you can use, modify, and distribute aenum freely in commercial and open-source projects with minimal restrictions.
last release 2026-03-20 (147 days) · last repo commit 2026-06-11 · 209 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 39,708,100 downloads/mo, #689 on PyPI
Alternatives
Verify before relying
pip install aenum
from aenum import Enum, Flag
class Color(Enum):
RED = 1
GREEN = 2
BLUE = 3
class Permission(Flag):
READ = 1
WRITE = 2
EXECUTE = 4- Whether version 3.1's breaking changes in custom Enum settings affect existing code using earlier versions.
- Whether AutoNumber and AutoValue removal in version 3.1 impacts codebases that relied on those features.
What it is and what it does
aenum is a library that extends Python's standard Enum with additional enumeration types and utility functions. It provides Enum, IntEnum, Flag, and IntFlag classes for creating symbolic constants, plus specialized variants like AutoNumberEnum (auto-assigns int values), OrderedEnum (adds comparison operators), and UniqueEnum (enforces one name per value). It also includes NamedTuple for fixed-length tuples with named field access and NamedConstant for immutable constants.
The library is designed as a drop-in enhancement to the stdlib Enum, offering features like bitwise operations on Flag members, automatic value binding to attributes, and helper functions (convert, extend_enum, export, unique decorator) for common enumeration patterns. It supports Python 2.7 and Python 3.3 through 3.13, making it useful for codebases that need richer enum semantics or compatibility across multiple Python versions.
Use it for
- Define status or state constants with comparison and iteration support.
- Create permission or feature flags that can be combined with bitwise operators.
- Build fixed-length data structures with named fields as an alternative to other tuple implementations.
- Enforce unique enum values to prevent accidental aliasing of different names to the same constant.
- Convert existing module-level constants into a proper Enum for type safety and IDE autocompletion.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
aenum is actively maintained, has no security vulnerabilities, carries a permissive BSD license, and installs with zero dependencies. It's worth installing if you need enum features beyond the standard library (bitwise flags, auto-numbering, ordered comparisons) or if you support older Python versions. Be aware that version 3.1 removed AutoNumber and AutoValue and changed custom Enum settings—review the changelog if upgrading from earlier versions.
Install
aenum on PyPI
Before you install
Low install friction: pure Python wheels for both Python 2 and 3, no runtime dependencies, and actively maintained with a recent commit on 2026-06-11.
License in practice
BSD License (permissive) means you can use, modify, and distribute aenum freely in commercial and open-source projects with minimal restrictions.
Quickstart
pip install aenum
from aenum import Enum, Flag
class Color(Enum):
RED = 1
GREEN = 2
BLUE = 3
class Permission(Flag):
READ = 1
WRITE = 2
EXECUTE = 4Verify before relying
- Whether version 3.1's breaking changes in custom Enum settings affect existing code using earlier versions.
- Whether AutoNumber and AutoValue removal in version 3.1 impacts codebases that relied on those features.
Package facts
| License | BSD License permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Actively maintained 147 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 39,708,100 / month, #689 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: BSD LicenseProgramming Language :: PythonProgramming Language :: Python :: 2.7Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.3Programming Language :: Python :: 3.4Programming Language :: Python :: 3.5Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: Software Development |
Evidence: aenum-3.1.17-py2-none-any.whl; aenum-3.1.17-py3-none-any.whl
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See also constantly · enum34 · ntstatus · django-enum · matrix-enum · backports.strenum · ordered-enum · enum-tools · marshmallow-enum · recordtype