cast error to Err class

Author: matt-o-how

chia/_tests/blockchain/test_blockchain_transactions.py

@@ -92,7 +92,7 @@ async def test_basic_blockchain_tx(
         for coin in added_coins:
             unspent = await full_node_1.coin_store.get_coin_record(coin.name())
             assert unspent is not None
-            assert not unspent.spent
+            assert not unspent.spent()
             assert not unspent.coinbase
 
     @pytest.mark.anyio

chia/consensus/block_body_validation.py

@@ -565,7 +565,8 @@ async def validate_block_body(
             prev_transaction_block_timestamp,
         )
         if error is not None:
-            return error
+            # TODO: standardise errors across Rust and Python so cast is not necesary here
+            return Err(error)
 
     # 22. Verify aggregated signature is done in pre-validation
     if not block.transactions_info.aggregated_signature: