Where communities thrive

Join over 1.5M+ people
Join over 100K+ communities
Free without limits
Create your own community

Explore more communities

ethereum/web3.py

https://web3py.readthedocs.io/

People

Repo info

Activity

May 27 21:37

carver opened #2491
May 27 16:46

kclowes commented #2489
May 27 15:45

pacrob closed #2490
May 27 15:45

pacrob commented #2490
May 27 10:34

DevTenset opened #2490
May 27 00:20

cwelton opened #2489
May 26 20:48

carver commented #2482
May 26 18:16

pacrob review_requested #2488
May 26 18:16

pacrob review_request_removed #2488
May 26 18:16

pacrob review_requested #2488
May 26 18:16

pacrob review_requested #2488
May 26 18:14

pacrob edited #2488
May 26 18:07

pacrob synchronize #2488
May 26 17:53

pacrob synchronize #2488
May 26 17:51

pacrob opened #2488
May 26 03:21

ChiHangChen edited #2481
May 26 03:20

ChiHangChen edited #2481
May 26 00:54

pacrob commented #2482
May 26 00:52

0xRadiant opened #2487
May 26 00:50

0xRadiant opened #2486

Marc Garreau

@marcgarreau

@voith thanks for jumping back in! no issue yet, feel free to create one if you want to solicit more thoughts from the team.

Marc Garreau

@marcgarreau

web3.py 5.11.1 released :rocket:

This includes a ton of type annotation fixes and some beefing up of the intro docs. Thanks to @Uxio0 and @MatthiasLohr for contributions this round :clap:

https://web3py.readthedocs.io/en/stable/releases.html#v5-11-1-2020-06-17

Mikko Ohtamaa

@miohtama

@marcgarreau @MatthiasLohr excellent work, thank you sirs

Marc Garreau

@marcgarreau

and thank you @miohtama for helping to answer questions around here :smile:

Eth-Gitter-Bridge

@Eth-Gitter-Bridge

<Christoph> @iamajmalhassan what in particular? You sign a transaction before you propagate it through the network.

Eth-Gitter-Bridge

@Eth-Gitter-Bridge

<carver> @iamajmalhassan are you using a node with hosted keys, or do you have local private keys? If you're using hosted keys, you don't have to worry about signing a transaction at all. Some more background: https://web3py.readthedocs.io/en/stable/web3.eth.account.html#local-vs-hosted-nodes

Voith

@voith

thanks for jumping back in! no issue yet, feel free to create one if you want to solicit more thoughts from the team.

I have some working code, I’ll create a PR tomorrow. However, the are some issues with ganache and its best to show these through code rather than creating an issue.

Eth-Gitter-Bridge

@Eth-Gitter-Bridge

<Marc Garreau (wolovim)> Thats great! Look forward to it.

LIZHOUYI

@LIZHOUYI

taiyi

manuthema-rodriguez

@manuthema-rodriguez

Hello!! thanks @marcgarreau !

mintblock

@mintblock

hi - can someone point me in the right direction. I am coding in python and web3. does anyone know of any examples to swap tokens on kyber or uniswap?

thanks

Marc Garreau

@marcgarreau

I dont know if they have python tooling, but I would start by going to the kyber or uniswap documenation, @mintblock. All you need to interact with the contracts in web3.py is the contract address and ABI, though.

mintblock

@mintblock

thank you

I am using the abi and contract address but looking for an example to reference

Raphael Lullis

@lullis

Hello! I am wondering if there is any way that I can get the value of a transfer using only the information provided by a transaction receipt, or at least if there is any rule besides gasUsed == 21000 to indicate that a transaction is a ETH transfer?

Mikko Ohtamaa

@miohtama

@lullis no. Only for very simple cases. The receipt does not have any information about ETH or token transfers then happen between the smart contracts, on contract to contract calls. For these you need a full transaction trace. Ben Hauser, author of Brownie, can give tips on this one.

Ben Hauser

@iamdefinitelyahuman

thanks @miohtama :)

@lullis Brownie provides an object TransactionReceipt that can show you the return value from a broadcasted transaction.. it's available as TransactionReceipt.return_value - https://eth-brownie.readthedocs.io/en/stable/api-network.html#TransactionReceipt.return_value

for a more general overview of what you can do with TransactionReceipt - https://eth-brownie.readthedocs.io/en/stable/core-transactions.html

Raphael Lullis

@lullis

Thank you. It looks interesting, but it might be too much for what my immediate needs. I am building a a web app to work as a payment gateway, so at the moment all I care about is keeping track of ETH and ERC20 transfers.

Raphael Lullis

@lullis

I do have access to the transaction data along with the receipt already. I was just wondering if I could have my function that tracks transfers relying only on the receipt, but if I have to reconcile data from tx_data and tx_receipt, it's okay...

El De-dog-lo

@fubuloubu

web3py handles the stateMutability field in ABI, right?

mintblock

@mintblock

I am trying to submit a transaction to a smart contract. does anyone know what this error means? I googled, raised my gas amount and limit but no change. your help is appreciated... line 153, in request_blocking
raise ValueError(response["error"])
ValueError: {'code': -32000, 'message': 'gas required exceeds allowance (11964883) or always failing transaction'}

Mikko Ohtamaa

@miohtama

@mintblock It means there is an exception thrown by Solidity code - most likely require

if there is an error then the all available gas is consumed

El De-dog-lo

@fubuloubu

Is there any plans in v6 to properly implement handling for structs? (perhaps handling them as creating an ad-hoc NamedTuple for output, and then just querying attributes of any given input object)

El De-dog-lo

@fubuloubu

https://github.com/ethereum/web3.py/issues/1634#issuecomment-650797252

debugged a pretty insidious issue with the ABI decoder in web3py

Mikko Ohtamaa

@miohtama

@fubuloubu diving in the deep end!

Daniel Tong

@DanielTongAwesome

hi guys ~ just some questions about web3.py. I have a simple test contract, and I want to have a script locally to test out the interaction with smart contract

how do I set up the default account by using the private key

its pretty simple, but i am new to web3.py

Daniel Tong

@DanielTongAwesome

can someone show me how to link this transact with an account ?

Daniel Tong

@DanielTongAwesome

my assumption is i need to set up eth.defaultAccount = my private key account

how should i do that

Marc Garreau

@marcgarreau

@DanielTongAwesome w3.eth.defaultAccount = w3.eth.accounts[0], for example. its just the public address.

Daniel Tong

@DanielTongAwesome

oh but i am not using ganache

if I want to transact from my test wallet

how should i do that

Marc Garreau

@marcgarreau

Have you seen this page yet? https://web3py.readthedocs.io/en/stable/web3.eth.account.html

Daniel Tong

@DanielTongAwesome

thanks @marcgarreau

Marc Garreau

@marcgarreau

:+1:

Daniel Tong

@DanielTongAwesome

I made a contract transact through web3.py

but I encountered an error

https://ropsten.etherscan.io/tx/0x56e8b6e70bea94ccb9c76a036694768d0e3ce5ed182d742fc6dd900608802313

how to findout the reason why I got reverted

17 replies

Daniel Tong

@DanielTongAwesome

etherscan did not show detailed reason why it failed

Chat via Matrix