Ad-Hoc Compiled Contract Address not in Canonical Form

[fubuloubu]

What was wrong?

Got yelled at doing something that doesn't fail when using web3py directly

Code that produced the error

from vyper.compiler import compile as vyc
from vyper.compiler import mk_full_signature as vya

@pytest.fixture
def AdHocContract(w3):
    VYPER_CONTRACT = """
a: address
    """
    interface = {
        'abi': vya(VYPER_CONTRACT),
        'bytecode': vyc(VYPER_CONTRACT),
        'bytecode_runtime': vyc(VYPER_CONTRACT, bytecode_runtime=True)
    }
    txn_hash = w3.eth.contract(**interface).constructor().transact()
    address = w3.eth.waitForTransactionReceipt(txn_hash)['contractAddress']
    return w3.eth.contract(address, **interface)

Full error output

    txn_hash = w3.eth.contract(**interface).constructor().transact()
    address = w3.eth.waitForTransactionReceipt(txn_hash)['contractAddress']
>   return w3.eth.contract(address, **interface)

E   ethpm.exceptions.ValidationError: Py-EthPM library only accepts canonicalized addresses.
    0xDe09E74d4888Bc4e65F589e8c13Bce9F71DdF4c7 is not in the accepted format.

How can it be fixed?

pytest-ethereum should convert address to canonical form before passing to ethPM for ad-hoc compiled contracts.

[fubuloubu]

See https://github.com/GunClear/PlasmaRifle/commit/9c3abc3da2b04ce2162c5ffccd6932b3b18da7e0 for real setup (issue is patched in commit)