1 files changed, 5 insertions, 8 deletions
diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
index fef9982412..034ed893f4 100644
--- a/test/functional/test_framework/util.py
+++ b/test/functional/test_framework/util.py
@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
-# Copyright (c) 2014-2018 The Bitcoin Core developers
+# Copyright (c) 2014-2019 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Helpful routines for regression testing."""
 
 from base64 import b64encode
-from binascii import hexlify, unhexlify
+from binascii import unhexlify
 from decimal import Decimal, ROUND_DOWN
 import hashlib
 import inspect
@@ -182,9 +182,6 @@ def check_json_precision():
 def count_bytes(hex_string):
     return len(bytearray.fromhex(hex_string))
 
-def bytes_to_hex_str(byte_str):
-    return hexlify(byte_str).decode('ascii')
-
 def hash256(byte_str):
     sha256 = hashlib.sha256()
     sha256.update(byte_str)
@@ -267,7 +264,7 @@ def get_rpc_proxy(url, node_number, timeout=None, coveragedir=None):
     return coverage.AuthServiceProxyWrapper(proxy, coverage_logfile)
 
 def p2p_port(n):
-    assert(n <= MAX_NODES)
+    assert n <= MAX_NODES
     return PORT_MIN + n + (MAX_NODES * PortSeed.n) % (PORT_RANGE - 1 - MAX_NODES)
 
 def rpc_port(n):
@@ -425,7 +422,7 @@ def gather_inputs(from_node, amount_needed, confirmations_required=1):
     """
     Return a random set of unspent txouts that are enough to pay amount_needed
     """
-    assert(confirmations_required >= 0)
+    assert confirmations_required >= 0
     utxo = from_node.listunspent(confirmations_required)
     random.shuffle(utxo)
     inputs = []
@@ -503,7 +500,7 @@ def create_confirmed_utxos(fee, node, count):
         node.generate(1)
 
     utxos = node.listunspent()
-    assert(len(utxos) >= count)
+    assert len(utxos) >= count
     return utxos
 
 # Create large OP_RETURN txouts that can be appended to a transaction