<Griffin Ichiba Hotchkiss> Ok, I think I was able to find a satisfactory answer, so disregard my messages above! I was confused that Python allows bytes to be expressed in ascii characters, so some byte sequences below 128 are written in ascii, while anything above (and quite a few below) that range are escaped and written in hex...
Running into an interesting issue when trying to adapt
py-evm for forking. ethereum/py-evm#1960. I'm trying to override balances, but they seem to "bounce back" in account db in a very mysterious way. Anyone aware why this would happen?
*out of curiosity
is it possible to build ethereum smart contracts in python instead of solidity?
Btw, there is a dependency issue with py-evm: ethereum/py-evm#1968
<carver, Jason Carver> There hasn't been a full review of the PR yet. One thing to note is that before it's merged, it will need to be tested against the ethereum/tests repo. Someone will pull in the latest and mark all the tests of new features as skippable for now, and then you can mark the related tests to not be skipped in the PR.
<carver, Jason Carver> Also, you can now drop all the commits from Alex and rebase on master instead
Are OutOfGas exceptions raised in internal calls using
apply_message? (https://github.com/ethereum/py-evm/blob/master/eth/vm/forks/frontier/computation.py#L52). I'm only seeing an OutOfGas handler for apply_create_message.
Hi I just started contributing to this repo.
pytest tests throw exceptions below. Any ideas?=================================================================================================== test session starts ===================================================================================================
platform darwin -- Python 3.6.13, pytest-5.4.3, py-1.10.0, pluggy-0.13.1
plugins: Faker-6.5.0, asyncio-0.10.0, forked-1.2.0, cov-2.5.1, xdist-1.31.0, timeout-1.4.2, hypothesis-5.49.0
timeout: 300.0s
timeout method: signal
timeout func_only: False
collected 36221 items / 1 skipped / 36220 selected
....
.Killed: 9
<carver, Jason Carver> @junning-tong the test suite is very big, you probably don't want to run it all at once. Try starting off with something like
pytest tests/core. If you want more, then tox will set other specific test subsets up. You can see those options listed in tox -l or look at the circleCI config to see which ones we run on every pull request.
Hi I did a simple implementation of Code_Merlization ethereum/py-evm#1958
https://gist.github.com/junning-tong/6a28319d5e742037758470a053b575ca
Is anyone else working on this?
If not, I'd like to refine my current implementation and start adding test cases.
<carver, Jason Carver> py-evm with support for Berlin is released in v0.4.0-alpha.1: https://py-evm.readthedocs.io/en/latest/release_notes.html#py-evm-0-4-0-alpha-1-2021-03-22
<carver, Jason Carver> There is a bug in alpha.2 that crashes when trying to get receipts from the chain. A fix is pushed into master, but I'm going to try to get trinity stable before the next py-evm release. (Unless someone is stuck on that bug right now. Please speak up if you are!)
it's been 84 years....
<carver, Jason Carver> https://py-evm.readthedocs.io/en/latest/release_notes.html#py-evm-0-4-0-alpha-3-2021-03-24 includes the last changes necessary to get trinity released with Berlin support, which should happen tomorrow
Hey, I'm going through https://py-evm.readthedocs.io/en/latest/guides/understanding_the_mining_process.html but stucked on "chain.mine_block()" because it does not throw error, but returns "AttributeError: 'Test Chain' object has no attribute 'mine_block'". Can you help me to solver this?
I'm running py-evm 0.4.0-alpha.3 exactly this code with python3.8:
from eth import constants, Chain
from eth.vm.forks.frontier import FrontierVM
from eth.vm.forks.homestead import HomesteadVM
from eth.chains.mainnet import HOMESTEAD_MAINNET_BLOCK
from eth.db.atomic import AtomicDB
from eth.chains.mainnet import MAINNET_GENESIS_HEADER
chain_class = Chain.configure(
__name__='Test Chain',
vm_configuration=(
(constants.GENESIS_BLOCK_NUMBER, FrontierVM),
(HOMESTEAD_MAINNET_BLOCK, HomesteadVM),
),
)
chain = chain_class.from_genesis_header(AtomicDB(), MAINNET_GENESIS_HEADER)
chain.mine_block()
<carver, Jason Carver> The example in the doc you linked uses a mining chain, so I'm not sure how to improve the docs. But if you see a way, let us know!
This may be a silly question but is there a reason that new accounts cannot create contracts in py-evm? In particular, it seems that contract creation always uses the sender nonce - 1 which results in a encoding error if the sender nonce is 0.
The code where this happens is here: https://github.com/ethereum/py-evm/blob/44e0ee4cb1756522ffe294a379d4735a25701003/eth/vm/forks/frontier/state.py#L68.
@ThomasJ02_twitter - there is no in-memory fork officially for
py-evm/eth-tester yet
but what you can do is use
HTTPProvider to connect to a forked ganache node without any special config. Brownie bakes this in nicely.
Ah, I see - there is an
increment_nonce operation on a preceding line - nevermind :)