Python implementation of the Ethereum Virtual Machine
Project description
Documentation hosted by ReadTheDocs
Introducing Py-EVM
Py-EVM is a new implementation of the Ethereum Virtual Machine written in python. It is currently in active development but is quickly progressing through the test suite provided by ethereum/tests. I have Vitalik, and the existing PyEthereum code to thank for the quick progress I’ve made as many design decisions were inspired, or even directly ported from the PyEthereum codebase.
Py-EVM aims to eventually become the defacto python implementation of the EVM, enabling a wide array of use cases for both public and private chains. Development will focus on creating an EVM with a well defined API, friendly and easy to digest documentation which can be run as a fully functional mainnet node.
Step 1: Alpha Release
The plan is to begin with an MVP, alpha-level release that is suitable for testing purposes. We’ll be looking for early adopters to provide feedback on our architecture and API choices as well as general feedback and bug finding.
Blog posts:
Development
Py-EVM depends on a submodule of the common tests across all clients, so you need to clone the repo with the --recursive flag. Example:
git clone --recursive git@github.com:ethereum/py-evm.gitThen install the required python packages via:
pip install -e . -r requirements-dev.txtRunning the tests
You can run the tests with:
py.test testsOr you can install tox to run the full test suite.
Releasing
Pandoc is required for transforming the markdown README to the proper format to render correctly on pypi.
For Debian-like systems:
apt install pandoc
Or on OSX:
brew install pandocTo release a new version:
bumpversion $$VERSION_PART_TO_BUMP$$
git push && git push --tags
make releaseHow to bumpversion
The version format for this repo is {major}.{minor}.{patch} for stable, and {major}.{minor}.{patch}-{stage}.{devnum} for unstable (stage can be alpha or beta).
To issue the next version in line, use bumpversion and specify which part to bump, like bumpversion minor or bumpversion devnum.
If you are in a beta version, bumpversion stage will switch to a stable.
To issue an unstable version when the current version is stable, specify the new version explicitly, like bumpversion --new-version 4.0.0-alpha.1 devnum
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