Uniswap v2 Python CREATE2

create2.py

# references
# 1. https://uniswap.org/docs/v2/javascript-SDK/getting-pair-addresses/
# 2. https://ethereum.stackexchange.com/questions/90539/how-to-get-the-non-packed-soliditykeccak-hash-in-python-web3

# deps
# Python 3.9.5
# 1. eth-abi==2.1.1
# 2. web3==5.18.0


def get_pair_address(token0: str, token1: str):
    import eth_abi
    from web3 import Web3

    init_code_hash = (
        "0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f"
    )

    # intuitively that is how it should be sorted in Uniswap contract
    if int(token0, 16) < int(token1, 16):
        temp = token0
        token0 = token1
        token1 = temp

    abi_encoded = eth_abi.encode_abi(["address", "address"], [token0, token1])
    hash = Web3.solidityKeccak(["bytes"], ["0x" + abi_encoded.hex()])

    return hash