PyTezos

Python SDK for Tezos:

• 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 integration testing framework:

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

Requirements

• git
• python 3.7+
• pip 20.2+

You will also probably need to install several cryptographic packets.

Linux

Use apt or your favourite package manager:

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

Also, ensure wheel package is installed:

$ pip install wheel

MacOS

Use homebrew:

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

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

Installation

$ 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

docker pull bakingbad/pytezos

Quick start

Read quick start guide

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

Additional materials

• Interacting with FA1.2 contract by TQTezos
  https://assets.tqtezos.com/token-contracts/1-fa12-lorentz#interactusingpytezos
• Deploying a contract by Vadim Manaenko
  https://blog.aira.life/tezos-dont-forget-the-mother-console-fd2001261e50

Michelson test samples

• In this repo
  https://github.com/baking-bad/pytezos/tree/master/examples
• Atomex (atomic swaps aka cross-chain transactions)
  https://github.com/atomex-me/atomex-michelson/blob/master/tests/test_atomex.py
• Atomex for FA1.2 (includes cross-contract interaction and views)
  https://github.com/atomex-me/atomex-fa12-ligo/tree/master/tests
• MultiAsset implementation tests (in a sandbox environment)
  https://github.com/tqtezos/smart-contracts/tree/master/multi_asset/tezos_mac_tests

Contact

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

About

The project was initially started by Arthur Breitman, now it's maintained by Baking Bad team. PyTezos development is supported by Tezos Foundation.