Lesson 10: 'Too many values to unpack (expected 5)

[jacobbinnie]

Hey there,

Normally pretty good at solving these issues myself whether it's a syntax error or finding a quick solution online. However, this one has got me stumped.

I'm testing the get_borrable_data def at 9:29:00 in the training video. Everytime I run the script I keep getting the following error. Any ideas?

Here's my current code too from the aave_borrow.py script:

from brownie import network, config, interface
from scripts.helpful_scripts import get_account
from scripts.get_weth import get_weth
from web3 import Web3

AMOUNT = Web3.toWei(0.1, "ether")


def main():
    account = get_account()
    erc20_address = config["networks"][network.show_active()]["weth_token"]
    if network.show_active() in ["mainnet-fork"]:
        get_weth()
    lending_pool = get_lending_pool()
    approve_tx = approve_erc20(AMOUNT, lending_pool.address, erc20_address, account)
    print("Depositing...")
    tx = lending_pool.deposit(
        erc20_address, AMOUNT, account.address, 0, {"from": account}
    )
    tx.wait(1)
    print("Deposited!")
    # ...how much?
    borrowable_eth, total_debt = get_borrowable_data(lending_pool, account)


def get_borrowable_data(lending_pool, account):
    (
        total_collateral_eth,
        total_debt_eth,
        available_borrow_eth,
        current_liquidation_threshold,
        health_factor,
    ) = lending_pool.getUserAccountData(account.address)
    available_borrow_eth = Web3.fromWei(available_borrow_eth, "ether")
    total_collateral_eth = Web3.fromWei(total_collateral_eth, "ether")
    total_debt_eth = Web3.fromWei(total_debt_eth, "ether")
    print(f"You have {total_collateral_eth} worth of ETH deposited.")
    print(f"You have {total_debt_eth} worth of ETH borrowed.")
    print(f"You can borrow {available_borrow_eth} worth of ETH.")
    return (float(available_borrow_eth), float(total_debt_eth))


def approve_erc20(amount, spender, erc20_address, account):
    print("Approving ERC20 Token...")
    erc20 = interface.IERC20(erc20_address)
    tx = erc20.approve(spender, amount, {"from": account})
    tx.wait(1)
    print("Approved!")
    return tx


def get_lending_pool():
    lending_pool_addresses_provider = interface.ILendingPoolAddressesProvider(
        config["networks"][network.show_active()]["lending_pool_addresses_provider"]
    )
    lending_pool_address = lending_pool_addresses_provider.getLendingPool()
    lending_pool = interface.ILendingPool(lending_pool_address)
    return lending_pool

[jacobbinnie]

Ah - I solved it! Turns out after reading through the official Aave LendingPool docs they've added an extra return value in their getUserAccountData() function. I simply had to add ltv as another parameter (not shown in the video tutorial) and everything worked perfectly.

def get_borrowable_data(lending_pool, account):
    (
        total_collateral_eth,
        total_debt_eth,
        available_borrow_eth,
        current_liquidation_threshold,
        ltv,
        health_factor,
    ) = lending_pool.getUserAccountData(account.address)
    available_borrow_eth = Web3.fromWei(available_borrow_eth, "ether")
    total_collateral_eth = Web3.fromWei(total_collateral_eth, "ether")
    total_debt_eth = Web3.fromWei(total_debt_eth, "ether")
    print(f"You have {total_collateral_eth} worth of ETH deposited.")
    print(f"You have {total_debt_eth} worth of ETH borrowed.")
    print(f"You can borrow {available_borrow_eth} worth of ETH.")
    return (float(available_borrow_eth), float(total_debt_eth))

Hope this helps any others who get stuck!

[cromewar]

Sorry for the delay, I'm glad is solved now.

[jacobbinnie]

No problem! Good to figure out for myself anyway 😊