如何使用web3.py在钱包之间传输ERC20令牌

from web3 import Web3

# 连接到以太坊主网
w3 = Web3(Web3.HTTPProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID'))

# 连接到以太坊Ropsten测试网络
w3 = Web3(Web3.HTTPProvider('https://ropsten.infura.io/v3/YOUR_INFURA_PROJECT_ID'))

# ERC20合约地址和ABI
contract_address = '0x1234567890abcdef...'
contract_abi = [
    {
        'constant': True,
        'inputs': [],
        'name': 'name',
        'outputs': [{'name': '', 'type': 'string'}],
        'payable': False,
        'stateMutability': 'view',
        'type': 'function'
    },
    {
        'constant': True,
        'inputs': [],
        'name': 'symbol',
        'outputs': [{'name': '', 'type': 'string'}],
        'payable': False,
        'stateMutability': 'view',
        'type': 'function'
    },
    # 其他合约方法...
]

# 加载合约
contract = w3.eth.contract(address=contract_address, abi=contract_abi)

# 发送方钱包地址和私钥
sender_address = '0xabcdef123456...'
sender_private_key = '0xabcdef123456...'

# 接收方钱包地址
receiver_address = '0x1234567890abcdef...'

# 构建转账交易
transaction = contract.functions.transfer(receiver_address, amount).buildTransaction({
    'from': sender_address,
    'gas': 200000,
    'gasPrice': w3.toWei('50', 'gwei'),
    'nonce': w3.eth.getTransactionCount(sender_address),
})

# 签名交易
signed_transaction = w3.eth.account.signTransaction(transaction, sender_private_key)

# 发送交易
transaction_hash = w3.eth.sendRawTransaction(signed_transaction.rawTransaction)

# 等待交易确认
transaction_receipt = w3.eth.waitForTransactionReceipt(transaction_hash)

# 检查交易状态
if transaction_receipt['status'] == 1:
    print('交易成功')
else:
    print('交易失败')