tests: Use explicit imports

test/functional/rpc_rawtransaction.py

@@ -13,10 +13,11 @@ Test the following RPCs:
 """
 
 from collections import OrderedDict
+from decimal import Decimal
 from io import BytesIO
 from test_framework.messages import CTransaction, ToHex
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
+from test_framework.util import assert_equal, assert_raises_rpc_error, bytes_to_hex_str, connect_nodes_bi, hex_str_to_bytes
 
 class multidict(dict):
     """Dictionary that allows duplicate keys.