PyTezos

• RPC query engine
• Cryptography
• Building and parsing operations
• Smart contract interaction
• Local forging/packing & vice versa
• Working with Michelson AST

PyTezos CLI

• Generating contract parameter/storage schema
• Activating and revealing accounts
• Deploying contracts (+ GitHub integration)

Michelson REPL

• Builtin interpreter (reimplemented)
• Set of extra helpers (stack visualization, blockchain context mocking)

Michelson Jupyter kernel

• Custom interpreter with runtime type checker
• Syntax highlighting, autocomplete with Tab
• In-place docstrings with Shift+Tab
• Macros support
• Verbose execution logging
• Debug helpers

Michelson integration testing framework

• Writing integration tests using unittest package
• Simulating contract execution using remote intepreter (via RPC) or builtin one

Installation

You need to install cryptographic packages before installing the library/building the project:

Linux

Ubuntu, Debian and other apt-based distributions

$ sudo apt install libsodium-dev libsecp256k1-dev libgmp-dev pkg-config

Arch Linux

$ sudo pacman -Syu --needed libsodium libsecp256k1 gmp

MacOS

Homebrew needs to be installed.

$ brew tap cuber/homebrew-libsecp256k1
$ brew install libsodium libsecp256k1 gmp pkg-config

M1 (ARM)

In case secp256k1 or gmp cannot find either include or lib paths, try explicitly set environment vars:

CFLAGS="-I/opt/homebrew/Cellar/gmp/6.2.1_1/include/ -L/opt/homebrew/Cellar/gmp/6.2.1_1/lib/" LIB_DIR="/opt/homebrew/Cellar/libsecp256k1/0.1/lib" INCLUDE_DIR=/opt/homebrew/Cellar/libsecp256k1/0.1/include pip3 install --user pytezos

For running tests you might also need to export LD_LIBRARY_PATH:

export LD_LIBRARY_PATH=/opt/homebrew/lib/

Windows

The recommended way is to use WSL and then follow the instructions for Linux, but if you feel lucky you can try to install natively:

1. Install MinGW from https://osdn.net/projects/mingw/
2. Make sure C:\MinGW\bin is added to your PATH
3. Download the latest libsodium-X.Y.Z-msvc.zip from https://download.libsodium.org/libsodium/releases/.
4. Extract the Win64/Release/v143/dynamic/libsodium.dll from the zip file
5. Copy libsodium.dll to C:\Windows\System32\libsodium.dll

From PyPi

$ pip install wheel setuptools pkginfo cryptography
$ pip install pytezos

Google Colab

>>> !apt install libsodium-dev libsecp256k1-dev libgmp-dev
>>> !pip install pytezos

Docker container

Verified & minified images for CI/CD https://hub.docker.com/r/bakingbad/pytezos/tags

$ # 1. Use image from registry
$ docker pull bakingbad/pytezos
$ # or build it yourself
$ docker build . -t pytezos
$ # 2. Use included docker-compose.yml
$ docker-compose up -d notebook

Building from sources

Requirements:

• Python 3.8+
• Poetry
• libsodium, libsecp256k1, gmp
• make

$ # prepare environment
$ make install
# # run full CI with tests
$ make

Quick start

Read quick start guide
Learn how to enable Jupyter with Michelson

API reference

Check out a complete API reference

Inline documentation

If you are working in Jupyter/Google Colab or any other interactive console, you can display documentation for a particular class/method:

>>> from pytezos import pytezos
>>> pytezos

Publications

• Pytezos 2.0 release with embedded docs and smart contract interaction engine
  https://medium.com/coinmonks/high-level-interface-for-michelson-contracts-and-not-only-7264db76d7ae

• Materials from TQuorum:Berlin workshop - building an app on top of PyTezos and ConseilPy
  https://medium.com/coinmonks/atomic-tips-berlin-workshop-materials-c5c8ee3f46aa

• Materials from the EETH hackathon - setting up a local development infrastructure, deploying and interacting with a contract
  https://medium.com/tezoscommons/preparing-for-the-tezos-hackathon-with-baking-bad-45f2d5fca519

• Introducing integration testing engine
  https://medium.com/tezoscommons/testing-michelson-contracts-with-pytezos-513718499e93

Contact

• Telegram chat: @baking_bad_chat
• Slack channel: #baking-bad

Credits

• The project was initially started by Arthur Breitman, now it's maintained by Baking Bad team.
• Baking Bad is supported by Tezos Foundation
• Michelson test set from the Tezos repo is used to ensure the interpreter workability
• Michelson structured documentation by Nomadic Labs is used for inline help