安装python3

 sudo apt-get install python3-dev -y

设置python3默认

sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 150
sudo update-alternatives --config python

安装pip3

sudo apt-get install python3-pip

安装web3

pip3 install web3

测试合约代码

import time
from web3 import Web3
from web3.contract import Contract, ContractFunctions
from web3 import Web3

false = False
true = True
CONTRACT_ADDRESS = "0xD8B0c34024deA0B9ABaf187E58Dbb3e81a033367"
CONTRACT_ABI = [{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_value","type":"uint256"}],"name":"burn","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"balanceOf","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_value","type":"uint256"}],"name":"burnFrom","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"},{"name":"_extraData","type":"bytes"}],"name":"approveAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"},{"name":"","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"initialSupply","type":"uint256"},{"name":"tokenName","type":"string"},{"name":"tokenSymbol","type":"string"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Burn","type":"event"}]

w3 = Web3(Web3.HTTPProvider('http://。。。:8545'))
acct = w3.eth.account.privateKeyToAccount("e9bc9ae61053。。。。。69fd59d7986b9f4f49c025cc")

if __name__ == "__main__":
    print("getTransactionCount:", w3.eth.getTransactionCount(acct.address))
    print("gasPrice:", w3.eth.gasPrice)

    contract = w3.eth.contract(address=Web3.toChecksumAddress(CONTRACT_ADDRESS), abi=CONTRACT_ABI)
    TokenConstruct_txn = contract.functions.transfer(Web3.toChecksumAddress("0xc65dD4299C682f335d6e15e2B5774D015E01E479"), w3.toWei(2, 'ether')).buildTransaction({
        'from': acct.address,
        'nonce': w3.eth.getTransactionCount(acct.address),
        'gas': 100000,
        'gasPrice': w3.eth.gasPrice})
    TokenSigned = acct.signTransaction(TokenConstruct_txn)
    print("Pre-calculated transactionHash:", w3.toHex(w3.sha3(TokenSigned.rawTransaction)))
    TokenTx_hash = w3.eth.sendRawTransaction(TokenSigned.rawTransaction)
    print("transactionHash:", TokenTx_hash.hex())
    #TokenTx_receipt = w3.eth.waitForTransactionReceipt(TokenTx_hash)
    #TokenContract_address = TokenTx_receipt['contractAddress']
    #print("Contract Deployed At:", TokenContract_address)

参考

https://web3py.readthedocs.io/en/latest/quickstart.html

常见问题

1. Command "python setup.py egg_info" failed with error code 1

   pip3 install --upgrade setuptools
   python3 -m pip install --upgrade pip

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