Registry / devops / trove-classifiers

trove-classifiers

library2026.6.1.19pypypi✓ verified 26d ago

Provides the canonical set of classifiers for PyPI, enabling validation and categorization of Python projects. Current version: 2026.1.14.14. Maintained with regular updates to reflect the latest standards and additions in Python packaging.

devops

pip install trove-classifiers

github ↗package ↗

INSTALL

IMPORT

SIG · TROVE-CLASSIFIERS

trove-classifiers

devopspythonv2026.6.1.19

Install

1.6s avg

Import

11ms

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v2026.6.1.19 · 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

installs and imports cleanly · install 0.0s · import 0.012s · 17.9MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.6s · import 0.006s · 18MB

16MB installed

● package 16MB

Code

Verified usage

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

classifiers

✓ from trove_classifiers import classifiers

Access the set of valid classifiers.

deprecated_classifiers

✓ from trove_classifiers import deprecated_classifiers

Access the dictionary of deprecated classifiers.

Example usage to validate a classifier.

from trove_classifiers import classifiers # Check if a classifier is valid if 'License :: OSI Approved' in classifiers: print('Valid classifier') else: print('Invalid classifier')

Debug

Known issues

breakingThe 'deprecated_classifiers' dictionary may change in future versions, potentially affecting code that relies on specific deprecated classifiers.

fix

Regularly review the 'deprecated_classifiers' dictionary to ensure compatibility with future versions.

affects: 2026.1.14.14

gotchaRunning pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead.

fix

Use a virtual environment instead: https://pip.pypa.io/warnings/venv

affects: all

breakingRunning pip as the 'root' user can result in broken permissions and conflicting behavior with the system package manager, potentially rendering your system unusable. It is recommended to use a virtual environment instead.

fix

Use a virtual environment for package management. If running as root is necessary, use the '--root-user-action' option to suppress this warning after understanding the implications.

affects: pip: >=25.3

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'trove_classifiers'

The 'trove-classifiers' package is not installed in the current Python environment.

fix

pip install trove-classifiers

ImportError: cannot import name 'Classifier' from 'trove_classifiers'

The 'trove_classifiers' library does not expose a class or object named 'Classifier' for direct import; classifiers are typically handled as strings or accessed via provided functions and data structures.

fix

Use `trove_classifiers.list_classifiers()` to get all classifiers or `trove_classifiers.is_valid_classifier()` to check a specific classifier string.

AttributeError: module 'trove_classifiers' has no attribute 'validate_classifier'

The 'trove_classifiers' module does not have an attribute or function named 'validate_classifier'; the correct function for validation is 'is_valid_classifier'.

fix

Use `trove_classifiers.is_valid_classifier(classifier_string)` to check if a classifier is valid.

TypeError: expected string, int found

The `trove_classifiers.is_valid_classifier()` function expects a string argument representing the classifier, but received an integer or other non-string type.

fix

Ensure the argument passed to `trove_classifiers.is_valid_classifier()` is a string, for example: `trove_classifiers.is_valid_classifier("Programming Language :: Python :: 3.9")`.

Upgrade

Version history

2026.6.1.19latest on PyPI · released Jun 1, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

10 hits · last 30 days

node

Amazon

Resources

githubhttps://github.com/pypa/trove-classifiers ↗

packagehttps://pypi.org/project/trove-classifiers/ ↗