---
id: cocotb-bus
version: "0.3.0"
license: unclear
license_treatment: unclear
maintenance: active
---

# cocotb-bus

License: unclear · Maintenance: active · Downloads: 437.2K/mo

## What it is and what it does

cocotb-bus is a library of pre-packaged testbenching utilities and reusable bus interface models designed to work with cocotb, a Python framework for hardware verification. It sits on top of cocotb and scapy, providing abstraction layers for common bus protocols and simulation patterns to reduce boilerplate in hardware testbench development.

The package is no longer actively maintained, as stated in its own documentation. While the last commit is recent, the library itself has not had a release in 265 days. This means new features and bug fixes are unlikely, and compatibility with newer versions of cocotb or Python may drift over time.

Use it for:

- Building reusable testbenches for common hardware bus protocols without writing interface models from scratch
- Accelerating cocotb-based verification projects by leveraging pre-built bus abstractions
- Prototyping hardware simulation environments where standard bus interfaces are needed
- Learning cocotb verification patterns through example bus interface implementations

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

cocotb-bus provides pre-built testbenching tools and reusable bus interface models for cocotb, a Python-based hardware verification framework.

Yes, with strong conditions. The package is useful for cocotb users who need standard bus interfaces and can tolerate an unmaintained library. The unclear license is a significant blocker—verify licensing terms before use in commercial or proprietary projects. Low install friction and zero known vulnerabilities are positive, but the lack of active maintenance means you should expect to fork or patch it if issues arise.

## Install

pip install cocotb-bus
uv add cocotb-bus
poetry add cocotb-bus

## Installing cocotb-bus

Before you install: Installation is straightforward with low friction—a pure Python wheel with only cocotb and scapy as runtime dependencies. However, the package is explicitly unmaintained per its own caution notice, and the last release was 265 days ago.

License in practice: License status is unclear—no SPDX identifier or raw license text is available in the package metadata, making it impossible to determine what terms govern use or redistribution.

Quickstart:

pip install cocotb-bus
import cocotb_bus

Requires cocotb and scapy as runtime dependencies; requires Python >=3.6

Verify before relying:

- What specific bus interfaces and testbenching tools are included in version 0.3.0
- Whether the unmaintained status affects compatibility with recent cocotb releases
- How the unmaintained status will affect long-term support and security updates

## Package facts

- License: not declared (unclear)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 437.2K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

cocotb bus interfaces, hardware testbench tools, cocotb verification libraries, reusable bus models, hardware simulation testing, cocotb testbenching, digital verification framework, hardware-verification, cocotb-ecosystem, unmaintained

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