# Ethereum Contract Interface (ABI) Utility
[](https://discord.gg/GHryRvPB84)
[](https://circleci.com/gh/ethereum/eth-abi)
[](https://badge.fury.io/py/eth-abi)
[](https://pypi.python.org/pypi/eth-abi)
[](https://eth-abi.readthedocs.io/en/latest/?badge=latest)
Python utilities for working with Ethereum ABI definitions, especially encoding and decoding
Read more in the [documentation on ReadTheDocs](https://eth-abi.readthedocs.io/). [View the change log](https://eth-abi.readthedocs.io/en/latest/release_notes.html).
## Quickstart
```sh
python -m pip install eth-abi
```
## Developer Setup
If you would like to hack on eth-abi, please check out the [Snake Charmers
Tactical Manual](https://github.com/ethereum/snake-charmers-tactical-manual)
for information on how we do:
- Testing
- Pull Requests
- Documentation
We use [pre-commit](https://pre-commit.com/) to maintain consistent code style. Once
installed, it will run automatically with every commit. You can also run it manually
with `make lint`. If you need to make a commit that skips the `pre-commit` checks, you
can do so with `git commit --no-verify`.
### Development Environment Setup
You can set up your dev environment with:
```sh
git clone git@github.com:ethereum/eth-abi.git
cd eth-abi
virtualenv -p python3 venv
. venv/bin/activate
python -m pip install -e ".[dev]"
pre-commit install
```
### Release setup
To release a new version:
```sh
make release bump=$$VERSION_PART_TO_BUMP$$
```
#### How 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, specify which part to bump,
like `make release bump=minor` or `make release bump=devnum`. This is typically done from the
main branch, except when releasing a beta (in which case the beta is released from main,
and the previous stable branch is released from said branch).
If you are in a beta version, `make release bump=stage` will switch to a stable.
To issue an unstable version when the current version is stable, specify the
new version explicitly, like `make release bump="--new-version 4.0.0-alpha.1 devnum"`
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"description": "# Ethereum Contract Interface (ABI) Utility\n\n[](https://discord.gg/GHryRvPB84)\n[](https://circleci.com/gh/ethereum/eth-abi)\n[](https://badge.fury.io/py/eth-abi)\n[](https://pypi.python.org/pypi/eth-abi)\n[](https://eth-abi.readthedocs.io/en/latest/?badge=latest)\n\nPython utilities for working with Ethereum ABI definitions, especially encoding and decoding\n\nRead more in the [documentation on ReadTheDocs](https://eth-abi.readthedocs.io/). [View the change log](https://eth-abi.readthedocs.io/en/latest/release_notes.html).\n\n## Quickstart\n\n```sh\npython -m pip install eth-abi\n```\n\n## Developer Setup\n\nIf you would like to hack on eth-abi, please check out the [Snake Charmers\nTactical Manual](https://github.com/ethereum/snake-charmers-tactical-manual)\nfor information on how we do:\n\n- Testing\n- Pull Requests\n- Documentation\n\nWe use [pre-commit](https://pre-commit.com/) to maintain consistent code style. Once\ninstalled, it will run automatically with every commit. You can also run it manually\nwith `make lint`. If you need to make a commit that skips the `pre-commit` checks, you\ncan do so with `git commit --no-verify`.\n\n### Development Environment Setup\n\nYou can set up your dev environment with:\n\n```sh\ngit clone git@github.com:ethereum/eth-abi.git\ncd eth-abi\nvirtualenv -p python3 venv\n. venv/bin/activate\npython -m pip install -e \".[dev]\"\npre-commit install\n```\n\n### Release setup\n\nTo release a new version:\n\n```sh\nmake release bump=$$VERSION_PART_TO_BUMP$$\n```\n\n#### How to bumpversion\n\nThe version format for this repo is `{major}.{minor}.{patch}` for stable, and\n`{major}.{minor}.{patch}-{stage}.{devnum}` for unstable (`stage` can be alpha or beta).\n\nTo issue the next version in line, specify which part to bump,\nlike `make release bump=minor` or `make release bump=devnum`. This is typically done from the\nmain branch, except when releasing a beta (in which case the beta is released from main,\nand the previous stable branch is released from said branch).\n\nIf you are in a beta version, `make release bump=stage` will switch to a stable.\n\nTo issue an unstable version when the current version is stable, specify the\nnew version explicitly, like `make release bump=\"--new-version 4.0.0-alpha.1 devnum\"`\n",
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