DAWG2-Python
Pure-python reader for DAWGs (DAFSAs) created by dawgdic C++ library or DAWG Python extension.
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, installs with minimal friction, and solves a specific problem well: reading DAWG files in pure Python. Install it if you have pre-built DAWG data and want to query it without compiled extensions or C dependencies. Not suitable if you need to create DAWGs or require the fastest possible CPython performance.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires a pre-built DAWG file created by the DAWG Python package or dawgdic C++ library; this package cannot create DAWGs.
- Low friction: single pure-Python dependency (typing-extensions), wheel distribution, and active maintenance with recent commits.
- Supports Python 3.8 through 3.13 and PyPy.
License · maintenance · safety
MIT (permissive) — MIT license is permissive; you may use, modify, and distribute this package freely in commercial and private projects with minimal restrictions.
last release 2025-02-17 (543 days) · last repo commit 2026-08-01
0 known vulnerabilities (OSV.dev, 2026-08-14) · 400,636 downloads/mo, #6,937 on PyPI
Alternatives
Verify before relying
pip install DAWG2-Python
from DAWG2-Python import DAWG
d = DAWG().load('words.dawg')
if 'word' in d:
print(d['word'])- Whether performance under CPython (stated as ~50x slower than PyPy) is acceptable for your use case.
- Compatibility with DAWG files created by specific versions of the dawgdic or DAWG libraries.
- Exact API compatibility scope with the original DAWG module beyond what the description states.
What it is and what it does
DAWG2-Python is a pure-Python reader for DAWG (directed acyclic word graph) files, a space-efficient data structure for storing and querying large sets of strings with common prefixes. It provides read-only access to DAWGs built by the dawgdic C++ library or the DAWG Python extension, without requiring compiled dependencies. The package aims for API compatibility with the original DAWG module where feasible, making it a drop-in replacement for loading and querying pre-built DAWGs.
The main use case is accessing DAWG data structures in pure Python environments—particularly under PyPy, where it performs well—or when you want to avoid the compilation overhead of C extensions. It supports prefix-based lookups, key iteration, and membership testing. The package is read-only by design; DAWGs must be created externally using the DAWG or dawgdic libraries.
Use it for
- Load and query large word lists or dictionaries built as DAWGs without C extension dependencies.
- Perform prefix-based searches on linguistic or dictionary data stored in DAWG format.
- Run DAWG lookups under PyPy for better performance than CPython without recompiling.
- Integrate DAWG-based data structures into pure-Python applications or libraries.
- Check membership and iterate over keys in pre-built DAWG files for NLP or spell-checking tasks.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, installs with minimal friction, and solves a specific problem well: reading DAWG files in pure Python. Install it if you have pre-built DAWG data and want to query it without compiled extensions or C dependencies. Not suitable if you need to create DAWGs or require the fastest possible CPython performance.
Install
dawg2-python on PyPI
Before you install
Low friction: single pure-Python dependency (typing-extensions), wheel distribution, and active maintenance with recent commits. Supports Python 3.8 through 3.13 and PyPy.
Requires a pre-built DAWG file created by the DAWG Python package or dawgdic C++ library; this package cannot create DAWGs.
License in practice
MIT license is permissive; you may use, modify, and distribute this package freely in commercial and private projects with minimal restrictions.
Quickstart
pip install DAWG2-Python
from DAWG2-Python import DAWG
d = DAWG().load('words.dawg')
if 'word' in d:
print(d['word'])Verify before relying
- Whether performance under CPython (stated as ~50x slower than PyPy) is acceptable for your use case.
- Compatibility with DAWG files created by specific versions of the dawgdic or DAWG libraries.
- Exact API compatibility scope with the original DAWG module beyond what the description states.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <4.0,>=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagetyping-extensions |
| Maintenance | Actively maintained 543 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 400,636 / month, #6,937 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersIntended Audience :: Science/ResearchLicense :: OSI Approved :: MIT LicenseProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyTopic :: Scientific/Engineering :: Information AnalysisTopic :: Software Development :: Libraries :: Python ModulesTopic :: Text Processing :: Linguistic |
Evidence: dawg2_python-0.9.0-py3-none-any.whl
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