The Ethereum development framework with the most cute animal pictures
Clone or download
voith Added Web3 4.x and eth-tester support (#474)
* partially updated code to be compatible with web3 4.x: 50 % of the test-suite green

fix liniting issues

* more compatibilty fixes

* cleanup: removed .hex() and some commented code

linting fix

* added v9 config.json

* drop python 3.4 support

remobe python3,4 from travis

fixed linting error

removed python3.4 from tox

* [revert]: do not use hexbytes_to_hexstr in vyper compiler backend

remove unused import
Latest commit bd9da24 Sep 4, 2018


Gitter chat Build Status Documentation Status PyPi version PyPi downloads

Development framework for Ethereum smart contracts


Documentation on ReadTheDocs


pip install populus


pip install -e . -r requirements-dev.txt

Running the tests

You can run the tests with:

py.test tests

Or you can install tox to run the full test suite.


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 pandoc

To release a new version:

bumpversion $$VERSION_PART_TO_BUMP$$
git push && git push --tags
make release

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, 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