How can I send erc20 tokens

Questions
1

Hi I am using web3py with infura as a provider and I couldn’t find out how to send erc20 tokens.
Can any one help me please.
Thank you.

2

Hi @mouihbi - welcome to the Infura community! The Web3.py docs have a good writeup of getting set up. If you get stuck, this thread has some basic errors you may encounter as you set up.

3

@mouihbi hope this help you. Its in node js but you can use it in Python just follow the logic.

/**

  • Transfer ERC20 Tokens
  • @param decimals
  • @param to
  • @param amount
  • @param secret
    */

public async transferErc20Tokens(
decimals,
to: string,
amount,
secret: string,
cb,
) {
try {
const account = this.web3.eth.accounts.privateKeyToAccount(secret);
this.web3.eth.accounts.wallet.add(account);
this.web3.eth.defaultAccount = account.address;
const contract = new this.web3.eth.Contract(this.abi, this.tokenAddress);
const gasPriceGwei = await this.getNetworkGasFee();
const amountBigNo: any = new BigNumber(amount.toString());
const decimalsBigNo: any = new BigNumber(decimals.toString());
const amountBigNoResult: any = amountBigNo.multipliedBy(decimalsBigNo);
const valueNew = this.web3.utils.toHex(amountBigNoResult.toString());
const addressBalance = await this.getEthBalance(account.address, true);>
let gas: any = await this.getTransferGasestimation(
contract,
account.address,
gasPriceGwei,
to,
valueNew,
);
gas = gas + parseInt(process.env.ERC20_TX_GAS_BUFFER);
const maxGasInWei: any = gasPriceGwei * gas;
const gasInETH = await this.weiToEther(maxGasInWei);

 const nonceVal: number = "get latest nonce of from address" ;

    contract.methods
      .transfer(to, valueNew)
      .send({
        from: this.web3.eth.defaultAccount,
        gas: this.web3.utils.toHex(gas),
        gasPrice: this.web3.utils.toHex(gasPriceGwei),
        nonce: this.web3.utils.toHex(nonceVal),
      })
      .on('transactionHash', async (hash) => {
        console.log(hash);
      })
      .on('error', async (error) => {
        console.log('\n .send() error: ', error);
        cb(error.message, null);
      });
  }
} catch (error) {
  console.log('\n transferErc20Tokens fun error: ', error);
  cb(error.message, null);
}