[qa] py2: Unfiddle strings into bytes explicitly

1 files changed, 3 insertions, 4 deletions

diff --git a/qa/rpc-tests/listtransactions.py b/qa/rpc-tests/listtransactions.py
index 8fe72d95d1..0783a1f3d3 100755
--- a/qa/rpc-tests/listtransactions.py
+++ b/qa/rpc-tests/listtransactions.py
@@ -9,11 +9,10 @@ from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import *
 from test_framework.mininode import CTransaction, COIN
 from io import BytesIO
-import binascii
 
 def txFromHex(hexstring):
     tx = CTransaction()
-    f = BytesIO(binascii.unhexlify(hexstring))
+    f = BytesIO(hex_str_to_bytes(hexstring))
     tx.deserialize(f)
     return tx
 
@@ -167,7 +166,7 @@ class ListTransactionsTest(BitcoinTestFramework):
         tx3 = self.nodes[0].createrawtransaction(inputs, outputs)
         tx3_modified = txFromHex(tx3)
         tx3_modified.vin[0].nSequence = 0
-        tx3 = binascii.hexlify(tx3_modified.serialize()).decode('utf-8')
+        tx3 = bytes_to_hex_str(tx3_modified.serialize())
         tx3_signed = self.nodes[0].signrawtransaction(tx3)['hex']
         txid_3 = self.nodes[0].sendrawtransaction(tx3_signed)
 
@@ -193,7 +192,7 @@ class ListTransactionsTest(BitcoinTestFramework):
         # Replace tx3, and check that tx4 becomes unknown
         tx3_b = tx3_modified
         tx3_b.vout[0].nValue -= int(Decimal("0.004") * COIN) # bump the fee
-        tx3_b = binascii.hexlify(tx3_b.serialize()).decode('utf-8')
+        tx3_b = bytes_to_hex_str(tx3_b.serialize())
         tx3_b_signed = self.nodes[0].signrawtransaction(tx3_b)['hex']
         txid_3b = self.nodes[0].sendrawtransaction(tx3_b_signed, True)
         assert(is_opt_in(self.nodes[0], txid_3b))