fix pyflakes errors

qa/rpc-tests/httpbasics.py

@@ -10,8 +10,6 @@
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, start_nodes, str_to_b64str
 
-import base64
-
 from http.client import HTTPConnection
 from urllib.parse import urlparse
 

qa/rpc-tests/multi_rpc.py

@@ -14,7 +14,6 @@ from test_framework.util import (
     start_nodes,
     str_to_b64str,
 )
-import base64
 import os
 from http.client import HTTPConnection
 from urllib.parse import urlparse

qa/rpc-tests/test_framework/mininode.py

@@ -23,9 +23,8 @@ import asyncore
 import time
 import sys
 import random
-from binascii import hexlify, unhexlify
+from binascii import hexlify
 from io import BytesIO
-from codecs import encode
 import hashlib
 from threading import RLock
 from threading import Thread

qa/rpc-tests/test_framework/script.py

@@ -22,7 +22,6 @@ if sys.version > '3':
     bord = lambda x: x
 
 import struct
-import binascii
 
 from test_framework import bignum
 

qa/rpc-tests/test_framework/test_framework.py

@@ -13,7 +13,7 @@ import shutil
 import tempfile
 import traceback
 
-from .authproxy import AuthServiceProxy, JSONRPCException
+from .authproxy import JSONRPCException
 from .util import assert_equal, check_json_precision, \
     initialize_chain, initialize_chain_clean, \
     start_nodes, connect_nodes_bi, stop_nodes, \

qa/rpc-tests/tx_expiry_helper.py

@@ -8,12 +8,12 @@
 #
 from test_framework.mininode import CTransaction, NodeConnCB, mininode_lock, msg_ping, \
     msg_pong
-from test_framework.util import fail, hex_str_to_bytes, bytes_to_hex_str
+from test_framework.util import fail
 
 import io
 import time
 
-from binascii import hexlify, unhexlify
+from binascii import unhexlify
 
 
 class TestNode(NodeConnCB):

qa/rpc-tests/wallet_shieldcoinbase.py

@@ -7,7 +7,7 @@ from test_framework.test_framework import BitcoinTestFramework
 from test_framework.authproxy import JSONRPCException
 from test_framework.util import assert_equal, initialize_chain_clean, \
     start_node, connect_nodes_bi, sync_blocks, sync_mempools, \
-    wait_and_assert_operationid_status, get_coinbase_address, fail
+    wait_and_assert_operationid_status, get_coinbase_address
 
 from decimal import Decimal
 

qa/rpc-tests/wallet_shieldcoinbase_sapling.py

@@ -1,13 +1,6 @@
 #!/usr/bin/env python3
 
-import inspect
-import os
-
-# To keep pyflakes happy
-WalletShieldCoinbaseTest = object
-
-cwd = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
-exec(open(os.path.join(cwd, 'wallet_shieldcoinbase.py')).read())
+from wallet_shieldcoinbase import WalletShieldCoinbaseTest 
 
 class WalletShieldCoinbaseSapling(WalletShieldCoinbaseTest):
     def __init__(self):

qa/rpc-tests/wallet_shieldcoinbase_sprout.py

@@ -1,13 +1,6 @@
 #!/usr/bin/env python3
 
-import inspect
-import os
-
-# To keep pyflakes happy
-WalletShieldCoinbaseTest = object
-
-cwd = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
-exec(open(os.path.join(cwd, 'wallet_shieldcoinbase.py')).read())
+from wallet_shieldcoinbase import WalletShieldCoinbaseTest 
 
 class WalletShieldCoinbaseSprout(WalletShieldCoinbaseTest):
     def __init__(self):

qa/rpc-tests/zkey_import_export.py

@@ -6,8 +6,7 @@
 from decimal import Decimal
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_greater_than, start_nodes,\
-    initialize_chain_clean, connect_nodes_bi, wait_and_assert_operationid_status, \
-    wait_and_assert_operationid_status_result
+    initialize_chain_clean, connect_nodes_bi, wait_and_assert_operationid_status
 from functools import reduce
 import logging
 

qa/rpc-tests/zmq_test.py

@@ -8,7 +8,7 @@
 #
 
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import assert_equal, bytes_to_hex_str, start_nodes, wait_and_assert_operationid_status
+from test_framework.util import assert_equal, bytes_to_hex_str, start_nodes
 
 import zmq
 import struct