fix: wallets Decimal err (#670)

yearn/outputs/describers/vault.py

@@ -26,8 +26,8 @@ async def describe_wallets(self, vault_address, block=None):
             'total wallets': len(set(wallet for wallet, bal in balances.items())),
             'wallet balances': {
                 wallet: {
-                    "token balance": float(bal),
-                    "usd balance": float(bal) * price
+                    "token balance": bal,
+                    "usd balance": bal * price
                     } for wallet, bal in balances.items()
                 }
             }

yearn/outputs/postgres/utils.py

@@ -1,5 +1,6 @@
 import logging
-from typing import Optional
+from decimal import Decimal
+from typing import Dict, Optional
 
 from brownie import ZERO_ADDRESS, chain, convert
 from brownie.convert.datatypes import HexString
@@ -115,7 +116,7 @@ def last_recorded_block(Entity: db.Entity) -> int:
     return select(max(e.block) for e in Entity if e.chainid == chain.id).first()
 
 @db_session
-def fetch_balances(vault_address: str, block=None):
+def fetch_balances(vault_address: str, block=None) -> Dict[str, Decimal]:
     token_dbid = select(t.token_id for t in Token if t.chain.chainid == chain.id and t.address.address == vault_address).first()
     if block and block > last_recorded_block(UserTx):
         # NOTE: we use `postgres.` instead of `self.` so we can make use of parallelism

yearn/prices/magic.py

@@ -1,4 +1,5 @@
 import logging
+from decimal import Decimal
 from typing import Optional
 
 from brownie import chain
@@ -24,7 +25,7 @@
 
 logger = logging.getLogger(__name__)
 
-async def _get_price(token: AnyAddressType, block: Optional[Block]) -> float:
+async def _get_price(token: AnyAddressType, block: Optional[Block]) -> Decimal:
     """ Performs some checks before deferring to ypricemagic. """ 
 
     if chain.id == Network.Mainnet: