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Results tagged with python
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user 91530
Python is a dynamic and strongly typed programming language designed to emphasize usability.
2
votes
How to Decode Transaction Input Data using Etherscan API in Python
It's not perfect, but it'll get you the data you're looking for without needing to connect to a provider node. Answer edited to retrieve the ABI from Etherscan in the code.
import json
from requests i …
- 181
0
votes
No module named 'ethereum'
The ethereum module on pypi links to https://github.com/ethereum/pyethereum/, which is deprecated. Try https://pypi.org/project/py-evm/
- 181
1
vote
Problem with web3.py + pyinstaller
Version 6.6.0 had a problem with the necessary json files not being included. If you specify 6.6.1 you should be fine. Support for v5 is due to stop in August.
- 181
1
vote
error when compiling my solidity file with python
It looks like the key Outputselection is incorrectly capitalized. It should be outputSelection.
- 181
0
votes
self-hosted solutions to get account balance
The best self-hosted solution is to run your own RPC node. You can then connect to it over HTTP or websockets and retrieve whatever chain information you need. See https://ethereum.org/en/run-a-node/ …
- 181
0
votes
How to decode ABI such that i get From, To, For in python
Your question isn't quite clear, but I'm assuming that log['data'] is several bytes values concatenated, and that Value is an amount in wei. In that case you could use eth_abi and web3.py as below:
fr …
- 181
0
votes
How to call ethers.utils.defaultAbiCoder.encode(types, values) in python?
output, but the correct way to encode with eth_abi is:
from eth_abi import encode
types = ["address", "bytes32"]
values = [my_address, my_hash]
message = encode(types, values)
my_hash does need to be a python …
- 181
2
votes
Accepted
How to encode a solidity struct in python?
Adjusted from your example, the following works:
from eth_utils import keccak
from eth_abi import encode
myStruct = {
'data': 'Hello',
'issuer': '0x5B38Da6a701c568545dCfcB03FcB875f56beddC4' …
- 181
1
vote
I did not understand this python syntax
The code pa, pb = pb, pa swaps the values stored in pa and pb
It's a faster way of writing something like:
temp = pa
pa = pb
pb = temp
- 181
2
votes
Accepted
Manually RLP-encoding an ETH tx gives an incorrect result
You need to convert tx["to"] to bytes before encoding. You also have tx["yParity"] where tx["v"] should be, per your syntax guide.
from rlp import encode
from web3.types import HexBytes
from web3.data …
- 181