Minor Python cleanups to make flake8 pass with the new rules enabled

11 files changed, 27 insertions, 23 deletions

diff --git a/test/functional/feature_bip68_sequence.py b/test/functional/feature_bip68_sequence.py
index e5db9e18c7..eee38ce648 100755
--- a/test/functional/feature_bip68_sequence.py
+++ b/test/functional/feature_bip68_sequence.py
@@ -129,7 +129,7 @@ class BIP68Test(BitcoinTestFramework):
 
             # Track whether any sequence locks used should fail
             should_pass = True
-            
+
             # Track whether this transaction was built with sequence locks
             using_sequence_locks = False
 
@@ -343,7 +343,7 @@ class BIP68Test(BitcoinTestFramework):
         tx2.rehash()
 
         self.nodes[0].sendrawtransaction(ToHex(tx2))
-        
+
         # Now make an invalid spend of tx2 according to BIP68
         sequence_value = 100 # 100 block relative locktime
 
diff --git a/test/functional/feature_maxuploadtarget.py b/test/functional/feature_maxuploadtarget.py
index ce6ec76c61..072ba6c7c7 100755
--- a/test/functional/feature_maxuploadtarget.py
+++ b/test/functional/feature_maxuploadtarget.py
@@ -30,7 +30,7 @@ class TestP2PConn(P2PInterface):
         self.block_receive_map[message.block.sha256] += 1
 
 class MaxUploadTest(BitcoinTestFramework):
- 
+
     def set_test_params(self):
         self.setup_clean_chain = True
         self.num_nodes = 1
diff --git a/test/functional/feature_proxy.py b/test/functional/feature_proxy.py
index 2eb1be47a5..60859de7a5 100755
--- a/test/functional/feature_proxy.py
+++ b/test/functional/feature_proxy.py
@@ -182,7 +182,7 @@ class ProxyTest(BitcoinTestFramework):
         assert_equal(n1['onion']['proxy'], '%s:%i' % (self.conf2.addr))
         assert_equal(n1['onion']['proxy_randomize_credentials'], False)
         assert_equal(n1['onion']['reachable'], True)
-        
+
         n2 = networks_dict(self.nodes[2].getnetworkinfo())
         for net in ['ipv4','ipv6','onion']:
             assert_equal(n2[net]['proxy'], '%s:%i' % (self.conf2.addr))
diff --git a/test/functional/interface_rest.py b/test/functional/interface_rest.py
index 2ee33aa869..a48939d2e0 100755
--- a/test/functional/interface_rest.py
+++ b/test/functional/interface_rest.py
@@ -186,10 +186,10 @@ class RESTTest (BitcoinTestFramework):
         self.test_rest_request("/getutxos/checkmempool", http_method='POST', req_type=ReqType.JSON, status=400, ret_type=RetType.OBJ)
 
         # Test limits
-        long_uri = '/'.join(["{}-{}".format(txid, n) for n in range(20)])
+        long_uri = '/'.join(["{}-{}".format(txid, n_) for n_ in range(20)])
         self.test_rest_request("/getutxos/checkmempool/{}".format(long_uri), http_method='POST', status=400, ret_type=RetType.OBJ)
 
-        long_uri = '/'.join(['{}-{}'.format(txid, n) for n in range(15)])
+        long_uri = '/'.join(['{}-{}'.format(txid, n_) for n_ in range(15)])
         self.test_rest_request("/getutxos/checkmempool/{}".format(long_uri), http_method='POST', status=200)
 
         self.nodes[0].generate(1)  # generate block to not affect upcoming tests
diff --git a/test/functional/p2p_mempool.py b/test/functional/p2p_mempool.py
index 485a8af3d0..e54843b26f 100755
--- a/test/functional/p2p_mempool.py
+++ b/test/functional/p2p_mempool.py
@@ -30,6 +30,6 @@ class P2PMempoolTests(BitcoinTestFramework):
 
         #mininode must be disconnected at this point
         assert_equal(len(self.nodes[0].getpeerinfo()), 0)
-    
+
 if __name__ == '__main__':
     P2PMempoolTests().main()
diff --git a/test/functional/p2p_segwit.py b/test/functional/p2p_segwit.py
index 5546bf6b29..10c8475d01 100755
--- a/test/functional/p2p_segwit.py
+++ b/test/functional/p2p_segwit.py
@@ -450,7 +450,7 @@ class SegWitTest(BitcoinTestFramework):
         block = self.build_next_block()
 
         assert(len(self.utxo) > 0)
-        
+
         # Create a P2WSH transaction.
         # The witness program will be a bunch of OP_2DROP's, followed by OP_TRUE.
         # This should give us plenty of room to tweak the spending tx's
@@ -562,7 +562,7 @@ class SegWitTest(BitcoinTestFramework):
         self.log.info("Testing extra witness data in tx")
 
         assert(len(self.utxo) > 0)
-        
+
         block = self.build_next_block()
 
         witness_program = CScript([OP_DROP, OP_TRUE])
@@ -730,7 +730,7 @@ class SegWitTest(BitcoinTestFramework):
         witness_program = CScript([OP_DROP, OP_TRUE])
         witness_hash = sha256(witness_program)
         scriptPubKey = CScript([OP_0, witness_hash])
-        
+
         # Create a transaction that splits our utxo into many outputs
         tx = CTransaction()
         tx.vin.append(CTxIn(COutPoint(self.utxo[0].sha256, self.utxo[0].n), b""))
diff --git a/test/functional/test_framework/socks5.py b/test/functional/test_framework/socks5.py
index 4721809a3b..581de0ed5d 100644
--- a/test/functional/test_framework/socks5.py
+++ b/test/functional/test_framework/socks5.py
@@ -4,12 +4,14 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Dummy Socks5 server for testing."""
 
-import socket, threading, queue
+import socket
+import threading
+import queue
 import logging
 
 logger = logging.getLogger("TestFramework.socks5")
 
-### Protocol constants
+# Protocol constants
 class Command:
     CONNECT = 0x01
 
@@ -18,7 +20,7 @@ class AddressType:
     DOMAINNAME = 0x03
     IPV6 = 0x04
 
-### Utility functions
+# Utility functions
 def recvall(s, n):
     """Receive n bytes from a socket, or fail."""
     rv = bytearray()
@@ -30,7 +32,7 @@ def recvall(s, n):
         n -= len(d)
     return rv
 
-### Implementation classes
+# Implementation classes
 class Socks5Configuration():
     """Proxy configuration."""
     def __init__(self):
@@ -141,7 +143,7 @@ class Socks5Server():
                 thread = threading.Thread(None, conn.handle)
                 thread.daemon = True
                 thread.start()
-    
+
     def start(self):
         assert(not self.running)
         self.running = True
diff --git a/test/functional/wallet_importprunedfunds.py b/test/functional/wallet_importprunedfunds.py
index 4d349db23f..5f5bfcf683 100755
--- a/test/functional/wallet_importprunedfunds.py
+++ b/test/functional/wallet_importprunedfunds.py
@@ -16,7 +16,7 @@ class ImportPrunedFundsTest(BitcoinTestFramework):
         self.nodes[0].generate(101)
 
         self.sync_all()
-        
+
         # address
         address1 = self.nodes[0].getnewaddress()
         # pubkey
diff --git a/test/functional/wallet_keypool.py b/test/functional/wallet_keypool.py
index 9825e4d894..505014e48f 100755
--- a/test/functional/wallet_keypool.py
+++ b/test/functional/wallet_keypool.py
@@ -17,7 +17,7 @@ class KeyPoolTest(BitcoinTestFramework):
         addr_before_encrypting_data = nodes[0].getaddressinfo(addr_before_encrypting)
         wallet_info_old = nodes[0].getwalletinfo()
         assert(addr_before_encrypting_data['hdmasterkeyid'] == wallet_info_old['hdmasterkeyid'])
-        
+
         # Encrypt wallet and wait to terminate
         nodes[0].node_encrypt_wallet('test')
         # Restart node 0
diff --git a/test/functional/wallet_txn_clone.py b/test/functional/wallet_txn_clone.py
index d742ec4618..7577c4a0d2 100755
--- a/test/functional/wallet_txn_clone.py
+++ b/test/functional/wallet_txn_clone.py
@@ -92,7 +92,8 @@ class TxnMallTest(BitcoinTestFramework):
         # Node0's balance should be starting balance, plus 50BTC for another
         # matured block, minus tx1 and tx2 amounts, and minus transaction fees:
         expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"]
-        if self.options.mine_block: expected += 50
+        if self.options.mine_block:
+            expected += 50
         expected += tx1["amount"] + tx1["fee"]
         expected += tx2["amount"] + tx2["fee"]
         assert_equal(self.nodes[0].getbalance(), expected)
@@ -131,7 +132,7 @@ class TxnMallTest(BitcoinTestFramework):
         tx1 = self.nodes[0].gettransaction(txid1)
         tx1_clone = self.nodes[0].gettransaction(txid1_clone)
         tx2 = self.nodes[0].gettransaction(txid2)
-        
+
         # Verify expected confirmations
         assert_equal(tx1["confirmations"], -2)
         assert_equal(tx1_clone["confirmations"], 2)
diff --git a/test/functional/wallet_txn_doublespend.py b/test/functional/wallet_txn_doublespend.py
index f16756eeaa..8419d6b545 100755
--- a/test/functional/wallet_txn_doublespend.py
+++ b/test/functional/wallet_txn_doublespend.py
@@ -27,7 +27,7 @@ class TxnMallTest(BitcoinTestFramework):
         for i in range(4):
             assert_equal(self.nodes[i].getbalance(), starting_balance)
             self.nodes[i].getnewaddress("")  # bug workaround, coins generated assigned to first getnewaddress!
-        
+
         # Assign coins to foo and bar accounts:
         node0_address_foo = self.nodes[0].getnewaddress("foo")
         fund_foo_txid = self.nodes[0].sendfrom("", node0_address_foo, 1219)
@@ -64,7 +64,7 @@ class TxnMallTest(BitcoinTestFramework):
         # Create two spends using 1 50 BTC coin each
         txid1 = self.nodes[0].sendfrom("foo", node1_address, 40, 0)
         txid2 = self.nodes[0].sendfrom("bar", node1_address, 20, 0)
-        
+
         # Have node0 mine a block:
         if (self.options.mine_block):
             self.nodes[0].generate(1)
@@ -76,7 +76,8 @@ class TxnMallTest(BitcoinTestFramework):
         # Node0's balance should be starting balance, plus 50BTC for another
         # matured block, minus 40, minus 20, and minus transaction fees:
         expected = starting_balance + fund_foo_tx["fee"] + fund_bar_tx["fee"]
-        if self.options.mine_block: expected += 50
+        if self.options.mine_block:
+            expected += 50
         expected += tx1["amount"] + tx1["fee"]
         expected += tx2["amount"] + tx2["fee"]
         assert_equal(self.nodes[0].getbalance(), expected)
@@ -93,7 +94,7 @@ class TxnMallTest(BitcoinTestFramework):
         else:
             assert_equal(tx1["confirmations"], 0)
             assert_equal(tx2["confirmations"], 0)
-        
+
         # Now give doublespend and its parents to miner:
         self.nodes[2].sendrawtransaction(fund_foo_tx["hex"])
         self.nodes[2].sendrawtransaction(fund_bar_tx["hex"])