cot-assert
Assertion rewriting that raises a structured AnnotatedAssertion, for Python
2.7, Python 3.9+ and RPython. Intended as a drop-in replacement for pytest's
assertion rewriting on current pytest and on pytest 4.6.
Pre-alpha.
pip install cot-assert
One universal wheel serves Python 2.7 (pip 20 and later, CPython or PyPy) and Python 3.9 and later. It has no dependencies.
With pytest
Installing the package registers a pytest plugin that stays off until enabled:
[pytest]
cot_assert = true
# where a failed assert's explanation goes: message (default) or notes
cot_assert_finalize = message
or pytest --cot-assert. On Python 2.7, where it runs from source, load it
with -p cot_assert.pytest_plugin.
pytest still decides which modules are rewritten (test files, conftests,
pytest.register_assert_rewrite) and caches them under a separate name;
cot_assert does the rewriting, and failures render through pytest's own
comparison hooks. Failures show as AnnotatedAssertion instead of
AssertionError. --assert=plain turns rewriting off for both.
Without pytest
import cot_assert
cot_assert.install(["mypackage", "test_*"])
rewrites modules imported afterwards whose name matches.
1 maintainer
Metadata
1 maintainer
Release files for cot-assert 0.2.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| cot_assert-0.2.0.tar.gz | 51.0 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| cot_assert-0.2.0-py2.py3-none-any.whl | Python 3, Python 2 | none | any | Details |
Total release size: 80.1 kB
Release files / cot_assert-0.2.0.tar.gz
| Download URL | cot_assert-0.2.0.tar.gz |
|---|---|
| Size | 51.0 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
6f8356f37d28f2477ff343c523802069e8a149cafe4bfcad86876871fef8f741
|
|
BLAKE2b-256 checksum How to use checksums |
836c4e3d947d3a85a20681c915e310d7c8b9832f285e8d11aef79eee1449b338
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 24, 2026.
Transparency logRelease files / cot_assert-0.2.0-py2.py3-none-any.whl
| Download URL | cot_assert-0.2.0-py2.py3-none-any.whl |
|---|---|
| Size | 29.1 kB |
| Tags | Python 2 Python 3 |
|
SHA-256 checksum How to use checksums |
cc8da26b14f3c7ebd215ae90a7b209910b53889c7f520c60dff808f5bbee8618
|
|
BLAKE2b-256 checksum How to use checksums |
01888124c095bbdbac8fa02fa41cfac273eba67779307a8e6a86a63d622e9f9e
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 24, 2026.
Transparency log
