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Overview

pycobosafe is a Python SDK for sending transactions via Cobo Safe in the same way as brownie.

Head to https://github.com/coboglobal/pycobosafe for the source code.

pycobosafe also works as an interactive console to interact with Cobo Safe contracts. Read more here.

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Installation

pip install git+https://github.com/coboglobal/pycobosafe

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Usage

Your .env configuration

DELEGATE = <Your brownie account id>
COBOSAFE = <Address of CoboSafeAccount>

The code performs a transfer of WMATIC ERC20 token on Polygon network.

import json
import os

import dotenv
from brownie import Contract, accounts, network
from web3 import Web3

from pycobosafe.account import CoboSafeAccount

# Connect to the network. A fork chain is used for test.
network.connect("polygon-main-fork")

# Load delegate's private key / keystore file and CoboSafe address.
dotenv.load_dotenv()
DELEGATE = accounts.load((os.getenv("DELEGATE"))) # This is safer than plain private key.
COBOSAFE = os.getenv("COBOSAFE")
assert DELEGATE and COBOSAFE, "delegate or cobosafe not set"

cobosafe = CoboSafeAccount(COBOSAFE, DELEGATE)

WMATIC = Web3.toChecksumAddress("0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270")

ERC20_ABI = json.load(open(os.path.join(os.path.dirname(__file__), "ERC20.json")))
erc20 = Contract.from_abi("WMATIC", WMATIC, ERC20_ABI)

print(erc20.balanceOf(cobosafe.safe.address))

# Send transaction as other brownie accounts do.
erc20.transfer(DELEGATE, 1, {"from": cobosafe})

print(erc20.balanceOf(cobosafe.safe.address))
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