如何查询给定TRX地址的TRC20代币余额？

Question

我想获取拥有 WIN 代币的 Tron 钱包地址的 TRC20 代币（在本例中为 WIN 代币）的余额。

我正在使用 Python 模块 tron-api-python，根据我在 GitHub 上阅读的内容和文档，其代码应如下所示：

from tronapi import Tron

# Source for ABI: https://tronscan.org/#/token20/TLa2f6VPqDgRE67v1736s7bJ8Ray5wYjU7/code
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":"","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":"","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":"spender","type":"address"},{"name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"to","type":"address"},{"name":"value","type":"uint256"}],"name":"mint","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"value","type":"uint256"}],"name":"burn","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"owner","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":[],"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":"account","type":"address"}],"name":"addMinter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"renounceMinter","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"spender","type":"address"},{"name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","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":true,"inputs":[{"name":"account","type":"address"}],"name":"isMinter","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"name":"owner","type":"address"},{"name":"spender","type":"address"}],"name":"allowance","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"name","type":"string"},{"name":"symbol","type":"string"},{"name":"decimals","type":"uint8"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"account","type":"address"}],"name":"MinterAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"account","type":"address"}],"name":"MinterRemoved","type":"event"},{"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"}]'

tron = Tron()
contract = tron.trx.contract("TLa2f6VPqDgRE67v1736s7bJ8Ray5wYjU7", abi=contract_abi)
balance = contract.functions.balanceOf("TXRZqGMEXsGTX6AQtcSgYknos93hqw18P7")

print(balance)

但我得到的结果是：
eth_abi.exceptions.NoEntriesFound: No matching entries for 'address' in encoder registry

Answer 1

自己找的。这不是获取余额的代码，而是将 WIN 令牌发送给 return 的代码，function_selector 和 parameters 需要更改余额，但其余部分应该没问题，因为两者都基于触发智能合约。

tron_kwargs = dict()
tron_kwargs["private_key"] = your_privkey
tron_kwargs["default_address"] = your_base58_address

tron = Tron(**tron_kwargs)

kwargs = dict()
kwargs["contract_address"] = tron.address.to_hex(wink_base58_contract_address)
kwargs["function_selector"] = "transfer(address,uint256)"
kwargs["fee_limit"] = 100000
kwargs["call_value"] = 0
kwargs["parameters"] = [
    {
        'type': 'address',
        'value': tron.address.to_hex(recipients_base58_address)
    },
    {
        'type': 'uint256',
        'value': 8000000
    }
]

raw_tx = tron.transaction_builder.trigger_smart_contract(**kwargs)
sign = tron.trx.sign(raw_tx["transaction"])
result = tron.trx.broadcast(sign)

Answer 2

你可以使用这个API:

import requests
import json

def get_balance(address, token_symbol):
  url = "https://apilist.tronscan.org/api/account"
  payload = {
      "address": address,
  }
  res = requests.get(url, params=payload)
  trc20token_balances = json.loads(res.text)["trc20token_balances"]
  token_balance = next((item for item in trc20token_balances if item["symbol"] == token_symbol), None)
  if token_balance == None:
    return 0
  else:
    return int(token_balance["balance"])

之前的响应广播了一个事务来读取一个常量函数；如果您只是想查看余额，则不需要这样做。

如何查询给定TRX地址的TRC20代币余额？

How to query the balance of a TRC20 token for a given TRX address?

python

blockchain

smartcontracts

tron