Precli is the core of the Precaution App and Precaution Action. It also serves as a command line interface to demonstate its functionality. It is designed to do static code analysis of source code with a number of rules covering the standard library for the corresponding programming language.
If your needs go beyond the analysis of just the standard library, consider upgrading to Precaution Professional to get access to finding and fixing security vulnerabilities in third-party libraries. See https://www.securesauce.dev/ for more details.
Quick Start
To install:
pip install precli
Run precli on a single test example:
precli tests/unit/rules/python/stdlib/hmac/examples/hmac_timing_attack.py
Example code:
# level: ERROR
# start_line: 18
# end_line: 18
# start_column: 13
# end_column: 15
import hmac
received_digest = (
b"\xe2\x93\x08\x19T8\xdc\x80\xef\x87\x90m\x1f\x9d\xf7\xf2"
b"\xf5\x10>\xdbf\xa2\xaf\xf7x\xcdX\xdf"
)
key = b"my-super-duper-secret-key-string"
password = b"pass"
digest = hmac.digest(key, password, digest="sha224")
print(digest == received_digest)
Example result:
Metadata
Release files for precli 0.8.4
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| precli-0.8.4.tar.gz | 424.7 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| precli-0.8.4-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 672.6 kB
Release files / precli-0.8.4.tar.gz
| Download URL | precli-0.8.4.tar.gz |
|---|---|
| Size | 424.7 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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|
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Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.7
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Transparency logRelease files / precli-0.8.4-py3-none-any.whl
| Download URL | precli-0.8.4-py3-none-any.whl |
|---|---|
| Size | 247.9 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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|
|
BLAKE2b-256 checksum How to use checksums |
c344d808059b7d5e901dc9699956ac1e8757e7291779e56ec2313bcc7be7595a
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.7
|
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 Nov 26, 2025.
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