safe-global/safe-eth-py

Safe-eth-py (previously known as Gnosis-py) ###########################################

.. class:: no-web no-pdf

Safe-eth-py includes a set of libraries to work with Ethereum and relevant Ethereum projects:

EthereumClient, a wrapper over Web3.py Web3 client including utilities to deal with ERC20/721 tokens and tracing.
Safe <https://github.com/safe-global/safe-contracts>_ classes and utilities.
Price oracles for Uniswap, Kyber...
Django serializers, models and utils.

Quick start

Just run pip install safe-eth-py or add it to your requirements.txt

If you want django ethereum utils (models, serializers, filters...) you need to run pip install safe-eth-py[django]

If you have issues building coincurve maybe you are missing some libraries <https://ofek.dev/coincurve/install/#source>_

Contributing to safe-eth-py

Clone the repo, then to set it up:

.. code-block:: bash

python -m venv venv
source venv/bin/activate
pip install -r requirements-dev.txt
pre-commit install -f

Add new address for new chains

If you want to add Safe Smart Account support for a new chain you must `open a new issue <https://github.com/safe-global/safe-eth-py/issues/new?assignees=&labels=add-new-address&projects=&template=add_safe_address_new_chain.yml&title=%5BNew+chain%5D%3A+%7Bchain+name%7D>`_.

Once the issue is created or edited, an automatic validation will be executed and a **Pull Request** will be created if everything is ok. Finally, the Safe team will review and merge the automatic **Pull Request** generated from the issue.

Ethereum utils
--------------
safe_eth.eth

class EthereumClient (ethereum_node_url: str): Class to connect and do operations with an ethereum node. Uses web3 and raw rpc calls for things not supported in web3. Only http/https urls are supported for the node url.

EthereumClient has some utils that improve a lot performance using Ethereum nodes, like the possibility of doing batch_calls (a single request making read-only calls to multiple contracts):

.. code-block:: python

from safe_eth.eth import EthereumClient from safe_eth.eth.contracts import get_erc721_contract ethereum_client = EthereumClient(ETHEREUM_NODE_URL) erc721_contract = get_erc721_contract(self.w3, token_address) name, symbol = ethereum_client.batch_call([ erc721_contract.functions.name(), erc721_contract.functions.symbol(), ])

If you want to use the underlying web3.py <https://github.com/ethereum/web3.py>_ library:

.. code-block:: python

from safe_eth.eth import EthereumClient ethereum_client = EthereumClient(ETHEREUM_NODE_URL) ethereum_client.w3.eth.get_block(57)

safe_eth.eth.constants

- ``NULL_ADDRESS (0x000...0)``: Solidity ``address(0)``.
- ``SENTINEL_ADDRESS (0x000...1)``: Used for Safe's linked lists (modules, owners...).
- Maximum and minimum values for `R`, `S` and `V` in ethereum signatures.

safe_eth.eth.oracles

Price oracles for Uniswap, UniswapV2, Kyber, SushiSwap, Aave, Balancer, Curve, Mooniswap, Yearn... Example:

.. code-block:: python

from safe_eth.eth import EthereumClient from safe_eth.eth.oracles import UniswapV2Oracle ethereum_client = EthereumClient(ETHEREUM_NODE_URL) uniswap_oracle = UniswapV2Oracle(ethereum_client) gno_token_mainnet_address = '0x6810e776880C02933D47DB1b9fc05908e5386b96' weth_token_mainnet_address = '0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2' price = uniswap_oracle.get_price(gno_token_mainnet_address, uniswap_oracle.weth_address)

safe_eth.eth.utils



Contains utils for ethereum operations:

- ``mk_contract_address_2(from_: Union[str, bytes], salt: Union[str, bytes], init_code: [str, bytes]) -> str``:
  Calculates the address of a new contract created using the new CREATE2 opcode.

Ethereum django (REST) utils
----------------------------
Django utils are available under ``safe_eth.eth.django``.
You can find a set of helpers for working with Ethereum using Django and Django Rest framework.

It includes:

- **safe_eth.eth.django.filters**: EthereumAddressFilter.
- **safe_eth.eth.django.models**: Model fields (Ethereum address, Ethereum big integer field).
- **safe_eth.eth.django.serializers**: Serializer fields (Ethereum address field, hexadecimal field).
- **safe_eth.eth.django.validators**: Ethereum related validators.
- **safe_eth.safe.serializers**: Serializers for Safe (signature, transaction...).
- All the tests are written using Django Test suite.

Contributors
------------
`See contributors <https://github.com/safe-global/safe-eth-py/graphs/contributors>`_

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safe-global / safe-eth-py

readme

Quick start

Contributing to safe-eth-py