Get spot price of a token pair in curve using ape

get_swap_price.py

from ape import project
from ape.api.accounts import AccountAPI

# ? Curve
CURVE_POOL_Address = "0xB9fC157394Af804a3578134A6585C0dc9cc990d4" # always verify this address don't take anyones word. At the time of creating this gist this was the latest curve pool address.

def get_CurvePool():
    return project.ICurvePool.at(CURVE_POOL_Address)

def CurveSwapIn(pool, _from: AccountAPI, tokenIn: str, tokenout: str, amount: int = 0) -> int:

    i = 0
    j = 0
    coinIdx = 0

    while i == j:
        coin = pool.coins(coinIdx)

        if coin == tokenIn:
            i = coinIdx
        elif coin == tokenOut:
            j = coinIdx

        if i != j:
            break

        coinIdx += 1

    amountsOut = pool.get_dy.call(i, j, amount, sender=_from)

    return amountsOut

# ****************
# * Curve        *
# ****************
def getCurveSwapPrice(account, tokens: list):
    curvePool = get_CurvePool()
    amountsOutCurve = CurveSwapIn(curvePool, account, tokens[1], tokens[0], ETH_AMOUNT)

    print("Curve Swapped tokens: ", amountsOutCurve // (10 ** WETH.decimals()))

def main():
    tokens = []
    # replace with the addresses of the respective tokens
    tokens.append(DAI)
    tokens.append(USDC)
    getCurveSwapPrice(account, tokens) # account is ape account container