Web3.py is a library for interacting with EVM based blockchains and smart contracts in Python.
For more information see Web3.py documentation.
Web3.py is maintained by Ethereum Foundation.
Questions tagged [web3py]
578 questions
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How to decode data from uniswap transaction in python
I am getting stuck decoding data transaction from a swap using uniswap protocol (Uniswap V3: Router 2 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45). In other words, I'd like to know if it exists a function that given a smart contract address and the…
evan
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in web3py, any function to call static?
I want to use Uniswap V3 Quoter function, but it's a write function. I have to call static to avoid gas cost.
I don't see any static call in web3py documentation. Any suggestion? Thanks ahead！
tinyhodler
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Decode Result From JSON-RPC eth_call to a Smart Contract
I would like to know if web3py or another package has a function to decode the result you get when you send a call to a smart contract.
Something similar to decode_function_input or abi.decodeParameters.
I know that doing…
testtesteur
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yte indices must be integers or slices, not str
I'm experiencing some issues with web3 in Python.
The line : if tx['from'] not in ws['A']:
in this code:
for tx in transactions:
if tx['from'] not in ws['A']:
contract = w3.eth.contract(address=tx['to'], abi=CONTRACT_ABI)
…
muttynhg
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Web3 python crypto cypher issue on M1 Mac
When I try to build a blockchain transaction using Web3 on python, I'm getting an error that is apparently because I'm using an Apple Silicon computer (2020 M1 MacBook Pro). I'm following a popular Solidity, Blockchain, and Smart Contract course on…
Leon KC
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Web3 ExtraDataLength Error on Optimism using python
ERROR - The field extraData is 97 bytes, but should be 32. It is quite likely that you are connected to a POA chain. Refer http://web3py.readthedocs.io/en/stable/middleware.html#geth-style-proof-of-authority for more details. The full extraData is:…
ALBERT V
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How can I fix Thirdweb Goerli Testnet HTTP Error 429?
I'm minting the NFT with the Python SDK of Thirdweb using Goerli TestNet.
Code :
sdk = ThirdwebSDK.from_private_key(PRIVATE_KEY, NETWORK)
NFT_COLLECTION_ADDRESS = contratonft
nft_collection =…
Arturo Vasquez
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decoding uniswap event data in python with ABI?
I started two days ago with ethereum blockchain, so my knowledge is still a little bit all over the place. Nevertheless, i managed to connect to a node, pull some general block data and so on. As a next level of difficulty, I tried to start building…
user19976975
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Pass tuple parameters to smart contracts using web3.py
I am using web3.py to pass a tuple type parameter to the contract smart,
{'considerationToken': '0x0000000000000000000000000000000000000000', 'considerationIdentifier': 0, 'considerationAmount': 1950000000000000, 'offerer':…
mingkang wang
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Issue with python's web3 module: why is web3.isConnected() always returning false?
I'm trying to get acquainted with python's web3 class, and I cannot seem to get connected to infura's node using my API. The isConnected() function always returns false, no matter what.
from web3 import Web3, eth
infura_url =…
Defi_Noob
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2 answers
decode 'input' from Uniswap V3 transaction left 'data' attribute undecoded
I'm trying to read pending transactions that goes to UniswapV3 using this code in async way
address_router = "0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45"
with open("abiRouterUniswapV3.json", "r") as myFile:
data = myFile.read()
abiRouter =…
Abejorro78
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Keyword argument 'args' interfering with JSON Data Conversion. How can I deal with this?
Though I've read many threads describing JSON to Python object conversion, I could not find anything about the specific issue I'm trying to deal with. I'm new to Python so please excuse me in advance if I'm asking a dumb question or if I'm…
Bandersnatch
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Transaction REVERT error using Web3.py and local Ganache instance
Trying to deploy / transact against a local Ganache instance using web3.py. I'm able to read from a deployed contract. I'm also able to read / write through Truffle.
At first I thought it was something wrong with the contract but I still get the…
kliao
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How to differentiate using web3.py functions from a smart contract based on type/visibility?
I'm connecting to a smart contract with web3.py.
I am the contract owner connecting with the same address which deployed the contract.
I can print all functions, but I would like to separate each function based on their type and visibility, like…
Pro Girl
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My test fails when i run "brownie test". How can I correctly compare transactionReeipt to a float in python?
from scripts.helpful_scripts import get_account
from scripts.deploy import deploy_donation
from web3 import Web3
def test_can_get_conversion_rate():
account = get_account()
donation = deploy_donation()
tx =…
christian olori
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