Lesson 6 : TypeError: argument of type 'NoneType' is not iterable

[wilonweb]

Hello,

When i run deploy.pi i got an error
TypeError: argument of type 'NoneType' is not iterable

This is my deploy.py

from brownie import FundMe, MockV3Aggregator, network, config
from scripts.helpful_scripts import get_account


def deploy_fund_me():
    account = get_account()
    # pass the price fee adress to our fundMe contract

    # if we are on a persistant network like rinkeby, use the associated adress
    # otherwise, deploy mocks
    if network.show_active() != "development":
        price_feed_adress = config["network"][network.show_active()][
            "eth_usd_price_feed"
        ]
    else:
        print(f"The Active network is {network.show_active()}")
        print("Deploying Mocks ...")
        mock_aggregator = MockV3Aggregator.deploy(
            18, 2000000000000000000000, {"from": account}
        )
        price_feed_adress = mock_aggregator
        print("Mocks Deployed")

    fund_me = FundMe.deploy(
        price_feed_adress,
        {"from": account},
        publish_source=["networks"][network.show_active()].get("verify"),
    )
    print(f"Contract deployed to {fund_me.address}")
    mock_aggregator = MockV3Aggregator.deploy(
        18, 2000000000000000000000, {"from": account}
    )
    price_feed_address = mock_aggregator.address
    print("Mock deployed!")


def main():

    deploy_fund_me()

The output console

PS D:\Programmations\smartContract\brownie_fund_me> brownie run scripts/deploy.py
Information : impossible de trouver des fichiers pour le(s) modèle(s) spécifié(s).
Brownie v1.17.2 - Python development framework for Ethereum

  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\_cli\__main__.py", line 64, in main
    importlib.import_module(f"brownie._cli.{cmd}").main()
  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\_cli\run.py", line 41, in main
    active_project.load_config()
  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\project\main.py", line 453, in load_config
    _load_project_config(self._path)
  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\_config.py", line 222, in _load_project_config
    and "cmd_settings" in values
TypeError: argument of type 'NoneType' is not iterable

MockV3Aggregator.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;

import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV2V3Interface.sol";

/**
 * @title MockV3Aggregator
 * @notice Based on the FluxAggregator contract
 * @notice Use this contract when you need to test
 * other contract's ability to read data from an
 * aggregator contract, but how the aggregator got
 * its answer is unimportant
 */
contract MockV3Aggregator is AggregatorV2V3Interface {
    uint256 public constant override version = 0;

    uint8 public override decimals;
    int256 public override latestAnswer;
    uint256 public override latestTimestamp;
    uint256 public override latestRound;

    mapping(uint256 => int256) public override getAnswer;
    mapping(uint256 => uint256) public override getTimestamp;
    mapping(uint256 => uint256) private getStartedAt;

    constructor(uint8 _decimals, int256 _initialAnswer) public {
        decimals = _decimals;
        updateAnswer(_initialAnswer);
    }

    function updateAnswer(int256 _answer) public {
        latestAnswer = _answer;
        latestTimestamp = block.timestamp;
        latestRound++;
        getAnswer[latestRound] = _answer;
        getTimestamp[latestRound] = block.timestamp;
        getStartedAt[latestRound] = block.timestamp;
    }

    function updateRoundData(
        uint80 _roundId,
        int256 _answer,
        uint256 _timestamp,
        uint256 _startedAt
    ) public {
        latestRound = _roundId;
        latestAnswer = _answer;
        latestTimestamp = _timestamp;
        getAnswer[latestRound] = _answer;
        getTimestamp[latestRound] = _timestamp;
        getStartedAt[latestRound] = _startedAt;
    }

    function getRoundData(uint80 _roundId)
        external
        view
        override
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        )
    {
        return (
            _roundId,
            getAnswer[_roundId],
            getStartedAt[_roundId],
            getTimestamp[_roundId],
            _roundId
        );
    }

    function latestRoundData()
        external
        view
        override
        returns (
            uint80 roundId,
            int256 answer,
            uint256 startedAt,
            uint256 updatedAt,
            uint80 answeredInRound
        )
    {
        return (
            uint80(latestRound),
            getAnswer[latestRound],
            getStartedAt[latestRound],
            getTimestamp[latestRound],
            uint80(latestRound)
        );
    }

    function description() external view override returns (string memory) {
        return "v0.6/tests/MockV3Aggregator.sol";
    }
}

// MockOracle
// Function signatures, event signatures, log topics

and helpful_scripts.py

from brownie import network, config, accounts


def get_account():
    if network.show_active() == "development":
        return accounts[0]
    else:
        return accounts.add(config["wallets"]["from_key"])

Do you know i get this error ?

[cromewar]

Hello @NinjaTurtles-cloud
For me seems a problem with your brownie-config.yaml could you please share a screenshot of your project folder structure and the code of that file?
Additional hint: look up for a indentation error and be sure your key are imported from .env

[NewCoderrrrr]

Hey, I just had this same issue with my program and the way I fixed it is by removing the testnets that I was not using in the brownie-config.yaml file. I see that you have:

  rinkeby:
    eth_usd_price_feed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e"
    verify: True
  development:
    verify: False
  kovan:
  mainnet:

Try:

rinkeby:
    eth_usd_price_feed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e"
    verify: True
  development:
    verify: False

Hopefully that helps, sorry if it doesnt. My issue was II had what you had - kovan. So I essentially had the extra mainnet: there for no reason.

[cromewar]

Yes @NewCoderrrrr is completely right:
please fix this:

networks:
  rinkeby:
    eth_usd_price_feed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e"
    verify: True
  development:
    verify: False
  kovan:
  mainnet:

as @NewCoderrrrr suggested.

[wilonweb]

Thanks,

It's seems okay, but i'm not sure beacause now i got a type error TypeError: list indices must be integers or slices, not str
When i launch brownie run scripts/deploy.py

This is my console output, is it normal ?

Brownie v1.17.2 - Python development framework for Ethereum

BrownieFundMeProject is the active project.

Launching 'ganache-cli.cmd --port 8545 --gasLimit 12000000 --accounts 10 --hardfork istanbul --mnemonic brownie'...

Running 'scripts\deploy.py::main'...
The Active network is development
Deploying Mocks ...
Transaction sent: 0x9b97f017aa368f8ad30dbd1f67684e495d7edece53b3406b8c3bab96974d5366
  Gas price: 0.0 gwei   Gas limit: 12000000   Nonce: 0
  MockV3Aggregator.constructor confirmed   Block: 1   Gas used: 430695 (3.59%)  MockV3Aggregator deployed at: 0x3194cBDC3dbcd3E11a07892e7bA5c3394048Cc87    

Mocks Deployed
  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\_cli\run.py", line 50, in main
    return_value, frame = run(
  File "C:\Users\wilfr\.local\pipx\venvs\eth-brownie\lib\site-packages\brownie\project\scripts.py", line 103, in run
    return_value = f_locals[method_name](*args, **kwargs)
  File ".\scripts\deploy.py", line 39, in main
    deploy_fund_me()
  File ".\scripts\deploy.py", line 27, in deploy_fund_me
    publish_source=["networks"][network.show_active()].get("verify"),
TypeError: list indices must be integers or slices, not str
Terminating local RPC client...
PS D:\Programmations\smartContract\brownie_fund_me>

[wilonweb]

Now it's okay i forgotten config in deploy.py

publish_source=config["networks"][network.show_active()].get("verify"),

[cromewar]

I'm glad is solved now.