[tests] Fix flake8 warnings in several wallet functional tests

This commit fixes flake8 warnings in the following functional tests:

- wallet_listreceivedby.py
- wallet_basic.py
- wallet_txn_clone.py
- wallet_listsinceblock.py
- wallet_import_rescan.py
- wallet_listtransactions.py
- wallet_importprunedfunds.py
- wallet_txn_doublspend.py

test/functional/wallet_basic.py

@@ -3,8 +3,20 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the wallet."""
+from decimal import Decimal
+import time
+
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
+from test_framework.util import (
+    assert_array_result,
+    assert_equal,
+    assert_fee_amount,
+    assert_raises_rpc_error,
+    connect_nodes_bi,
+    sync_blocks,
+    sync_mempools,
+    wait_until,
+)
 
 class WalletTest(BitcoinTestFramework):
     def set_test_params(self):
@@ -216,7 +228,7 @@ class WalletTest(BitcoinTestFramework):
         assert_equal(self.nodes[0].getunconfirmedbalance(), 1)
 
         # check if we can list zero value tx as available coins
-        #1. create rawtx
+        # 1. create raw_tx
         # 2. hex-changed one output to 0.0
         # 3. sign and send
         # 4. check if recipient (node0) can list the zero value tx
@@ -224,21 +236,20 @@ class WalletTest(BitcoinTestFramework):
         inputs = [{"txid": usp[0]['txid'], "vout": usp[0]['vout']}]
         outputs = {self.nodes[1].getnewaddress(): 49.998, self.nodes[0].getnewaddress(): 11.11}
 
-        rawTx = self.nodes[1].createrawtransaction(inputs, outputs).replace("c0833842", "00000000") #replace 11.11 with 0.0 (int32)
+        raw_tx = self.nodes[1].createrawtransaction(inputs, outputs).replace("c0833842", "00000000")  # replace 11.11 with 0.0 (int32)
-        decRawTx = self.nodes[1].decoderawtransaction(rawTx)
+        signed_raw_tx = self.nodes[1].signrawtransactionwithwallet(raw_tx)
-        signedRawTx = self.nodes[1].signrawtransactionwithwallet(rawTx)
+        decoded_raw_tx = self.nodes[1].decoderawtransaction(signed_raw_tx['hex'])
-        decRawTx = self.nodes[1].decoderawtransaction(signedRawTx['hex'])
+        zero_value_txid = decoded_raw_tx['txid']
-        zeroValueTxid= decRawTx['txid']
+        self.nodes[1].sendrawtransaction(signed_raw_tx['hex'])
-        self.nodes[1].sendrawtransaction(signedRawTx['hex'])
 
         self.sync_all()
         self.nodes[1].generate(1)  # mine a block
         self.sync_all()
 
-        unspentTxs = self.nodes[0].listunspent() #zero value tx must be in listunspents output
+        unspent_txs = self.nodes[0].listunspent()  # zero value tx must be in listunspents output
         found = False
-        for uTx in unspentTxs:
+        for uTx in unspent_txs:
-            if uTx['txid'] == zeroValueTxid:
+            if uTx['txid'] == zero_value_txid:
                 found = True
                 assert_equal(uTx['amount'], Decimal('0'))
         assert(found)
@@ -253,22 +264,22 @@ class WalletTest(BitcoinTestFramework):
         connect_nodes_bi(self.nodes, 0, 2)
         self.sync_all([self.nodes[0:3]])
 
-        txIdNotBroadcasted  = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 2)
+        txid_not_broadcast = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 2)
-        txObjNotBroadcasted = self.nodes[0].gettransaction(txIdNotBroadcasted)
+        tx_obj_not_broadcast = self.nodes[0].gettransaction(txid_not_broadcast)
         self.nodes[1].generate(1)  # mine a block, tx should not be in there
         self.sync_all([self.nodes[0:3]])
         assert_equal(self.nodes[2].getbalance(), node_2_bal)  # should not be changed because tx was not broadcasted
 
         # now broadcast from another node, mine a block, sync, and check the balance
-        self.nodes[1].sendrawtransaction(txObjNotBroadcasted['hex'])
+        self.nodes[1].sendrawtransaction(tx_obj_not_broadcast['hex'])
         self.nodes[1].generate(1)
         self.sync_all([self.nodes[0:3]])
         node_2_bal += 2
-        txObjNotBroadcasted = self.nodes[0].gettransaction(txIdNotBroadcasted)
+        tx_obj_not_broadcast = self.nodes[0].gettransaction(txid_not_broadcast)
         assert_equal(self.nodes[2].getbalance(), node_2_bal)
 
         # create another tx
-        txIdNotBroadcasted  = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 2)
+        self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 2)
 
         # restart the nodes with -walletbroadcast=1
         self.stop_nodes()
@@ -288,18 +299,18 @@ class WalletTest(BitcoinTestFramework):
         assert_equal(self.nodes[2].getbalance(), node_2_bal)
 
         # send a tx with value in a string (PR#6380 +)
-        txId  = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "2")
+        txid = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "2")
-        txObj = self.nodes[0].gettransaction(txId)
+        tx_obj = self.nodes[0].gettransaction(txid)
-        assert_equal(txObj['amount'], Decimal('-2'))
+        assert_equal(tx_obj['amount'], Decimal('-2'))
 
-        txId  = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "0.0001")
+        txid = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "0.0001")
-        txObj = self.nodes[0].gettransaction(txId)
+        tx_obj = self.nodes[0].gettransaction(txid)
-        assert_equal(txObj['amount'], Decimal('-0.0001'))
+        assert_equal(tx_obj['amount'], Decimal('-0.0001'))
 
         # check if JSON parser can handle scientific notation in strings
-        txId  = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "1e-4")
+        txid = self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), "1e-4")
-        txObj = self.nodes[0].gettransaction(txId)
+        tx_obj = self.nodes[0].gettransaction(txid)
-        assert_equal(txObj['amount'], Decimal('-0.0001'))
+        assert_equal(tx_obj['amount'], Decimal('-0.0001'))
 
         # This will raise an exception because the amount type is wrong
         assert_raises_rpc_error(-3, "Invalid amount", self.nodes[0].sendtoaddress, self.nodes[2].getnewaddress(), "1f-4")
@@ -335,13 +346,13 @@ class WalletTest(BitcoinTestFramework):
                             {"spendable": True})
 
         # Mine a block from node0 to an address from node1
-        cbAddr = self.nodes[1].getnewaddress()
+        coinbase_addr = self.nodes[1].getnewaddress()
-        blkHash = self.nodes[0].generatetoaddress(1, cbAddr)[0]
+        block_hash = self.nodes[0].generatetoaddress(1, coinbase_addr)[0]
-        cbTxId = self.nodes[0].getblock(blkHash)['tx'][0]
+        coinbase_txid = self.nodes[0].getblock(block_hash)['tx'][0]
         self.sync_all([self.nodes[0:3]])
 
         # Check that the txid and balance is found by node1
-        self.nodes[1].gettransaction(cbTxId)
+        self.nodes[1].gettransaction(coinbase_txid)
 
         # check if wallet or blockchain maintenance changes the balance
         self.sync_all([self.nodes[0:3]])

test/functional/wallet_importprunedfunds.py

@@ -3,8 +3,13 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the importprunedfunds and removeprunedfunds RPCs."""
+from decimal import Decimal
+
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
+from test_framework.util import (
+    assert_equal,
+    assert_raises_rpc_error,
+)
 
 class ImportPrunedFundsTest(BitcoinTestFramework):
     def set_test_params(self):

test/functional/wallet_listreceivedby.py

@@ -112,8 +112,8 @@ class ReceivedByTest(BitcoinTestFramework):
         self.log.info("listreceivedbylabel + getreceivedbylabel Test")
 
         # set pre-state
-        addrArr = self.nodes[1].getnewaddress()
+        address = self.nodes[1].getnewaddress()
-        label = self.nodes[1].getaccount(addrArr)
+        label = self.nodes[1].getaccount(address)
         received_by_label_json = [r for r in self.nodes[1].listreceivedbylabel() if r["label"] == label][0]
         balance_by_label = self.nodes[1].getreceivedbylabel(label)
 

test/functional/wallet_listsinceblock.py

@@ -150,26 +150,26 @@ class ListSinceBlockTest (BitcoinTestFramework):
 
         # send from nodes[1] using utxo to nodes[0]
         change = '%.8f' % (float(utxo['amount']) - 1.0003)
-        recipientDict = {
+        recipient_dict = {
             self.nodes[0].getnewaddress(): 1,
             self.nodes[1].getnewaddress(): change,
         }
-        utxoDicts = [{
+        utxo_dicts = [{
             'txid': utxo['txid'],
             'vout': utxo['vout'],
         }]
         txid1 = self.nodes[1].sendrawtransaction(
             self.nodes[1].signrawtransactionwithwallet(
-                self.nodes[1].createrawtransaction(utxoDicts, recipientDict))['hex'])
+                self.nodes[1].createrawtransaction(utxo_dicts, recipient_dict))['hex'])
 
         # send from nodes[2] using utxo to nodes[3]
-        recipientDict2 = {
+        recipient_dict2 = {
             self.nodes[3].getnewaddress(): 1,
             self.nodes[2].getnewaddress(): change,
         }
         self.nodes[2].sendrawtransaction(
             self.nodes[2].signrawtransactionwithwallet(
-                self.nodes[2].createrawtransaction(utxoDicts, recipientDict2))['hex'])
+                self.nodes[2].createrawtransaction(utxo_dicts, recipient_dict2))['hex'])
 
         # generate on both sides
         lastblockhash = self.nodes[1].generate(3)[2]
@@ -225,16 +225,16 @@ class ListSinceBlockTest (BitcoinTestFramework):
         utxos = self.nodes[2].listunspent()
         utxo = utxos[0]
         change = '%.8f' % (float(utxo['amount']) - 1.0003)
-        recipientDict = {
+        recipient_dict = {
             self.nodes[0].getnewaddress(): 1,
             self.nodes[2].getnewaddress(): change,
         }
-        utxoDicts = [{
+        utxo_dicts = [{
             'txid': utxo['txid'],
             'vout': utxo['vout'],
         }]
         signedtxres = self.nodes[2].signrawtransactionwithwallet(
-                self.nodes[2].createrawtransaction(utxoDicts, recipientDict))
+            self.nodes[2].createrawtransaction(utxo_dicts, recipient_dict))
         assert signedtxres['complete']
 
         signedtx = signedtxres['hex']

test/functional/wallet_listtransactions.py

@@ -3,13 +3,20 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the listtransactions API."""
-
+from decimal import Decimal
-from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
-from test_framework.mininode import CTransaction, COIN
 from io import BytesIO
 
-def txFromHex(hexstring):
+from test_framework.mininode import CTransaction, COIN
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    assert_array_result,
+    assert_equal,
+    bytes_to_hex_str,
+    hex_str_to_bytes,
+    sync_mempools,
+)
+
+def tx_from_hex(hexstring):
     tx = CTransaction()
     f = BytesIO(hex_str_to_bytes(hexstring))
     tx.deserialize(f)
@@ -146,7 +153,7 @@ class ListTransactionsTest(BitcoinTestFramework):
         inputs = [{"txid": txid_2, "vout": utxo_to_use["vout"]}]
         outputs = {self.nodes[1].getnewaddress(): 0.998}
         tx3 = self.nodes[0].createrawtransaction(inputs, outputs)
-        tx3_modified = txFromHex(tx3)
+        tx3_modified = tx_from_hex(tx3)
         tx3_modified.vin[0].nSequence = 0
         tx3 = bytes_to_hex_str(tx3_modified.serialize())
         tx3_signed = self.nodes[0].signrawtransactionwithwallet(tx3)['hex']
@@ -197,7 +204,5 @@ class ListTransactionsTest(BitcoinTestFramework):
         assert_equal(self.nodes[0].gettransaction(txid_3b)["bip125-replaceable"], "no")
         assert_equal(self.nodes[0].gettransaction(txid_4)["bip125-replaceable"], "unknown")
 
-
 if __name__ == '__main__':
     ListTransactionsTest().main()
-

test/functional/wallet_txn_clone.py

@@ -5,7 +5,12 @@
 """Test the wallet accounts properly when there are cloned transactions with malleated scriptsigs."""
 
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
+from test_framework.util import (
+    assert_equal,
+    connect_nodes,
+    disconnect_nodes,
+    sync_blocks,
+)
 
 class TxnMallTest(BitcoinTestFramework):
     def set_test_params(self):
@@ -71,8 +76,7 @@ class TxnMallTest(BitcoinTestFramework):
         pos0 = 2 * (4 + 1 + 36 + 1 + 4 + 1)
         hex40 = "00286bee00000000"
         output_len = 16 + 2 + 2 * int("0x" + clone_raw[pos0 + 16:pos0 + 16 + 2], 0)
-        if (rawtx1["vout"][0]["value"] == 40 and clone_raw[pos0 : pos0 + 16] != hex40 or
+        if (rawtx1["vout"][0]["value"] == 40 and clone_raw[pos0:pos0 + 16] != hex40 or rawtx1["vout"][0]["value"] != 40 and clone_raw[pos0:pos0 + 16] == hex40):
-            rawtx1["vout"][0]["value"] != 40 and clone_raw[pos0 : pos0 + 16] == hex40):
             output0 = clone_raw[pos0:pos0 + output_len]
             output1 = clone_raw[pos0 + output_len:pos0 + 2 * output_len]
             clone_raw = clone_raw[:pos0] + output1 + output0 + clone_raw[pos0 + 2 * output_len:]
@@ -153,16 +157,11 @@ class TxnMallTest(BitcoinTestFramework):
         # "bar" should have been debited by (possibly unconfirmed) tx2
         assert_equal(self.nodes[0].getbalance("bar", 0), 29 + tx2["amount"] + tx2["fee"])
         # "" should have starting balance, less funding txes, plus subsidies
-        assert_equal(self.nodes[0].getbalance("", 0), starting_balance
+        assert_equal(self.nodes[0].getbalance("", 0),
-                                                                - 1219
+                     starting_balance - 1219 + fund_foo_tx["fee"] - 29 + fund_bar_tx["fee"] + 100)
-                                                                + fund_foo_tx["fee"]
-                                                                -   29
-                                                                + fund_bar_tx["fee"]
-                                                                +  100)
 
         # Node1's "from0" account balance
         assert_equal(self.nodes[1].getbalance("from0", 0), -(tx1["amount"] + tx2["amount"]))
 
 if __name__ == '__main__':
     TxnMallTest().main()
-

test/functional/wallet_txn_doublespend.py

@@ -3,9 +3,16 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the wallet accounts properly when there is a double-spend conflict."""
+from decimal import Decimal
 
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import *
+from test_framework.util import (
+    assert_equal,
+    connect_nodes,
+    disconnect_nodes,
+    find_output,
+    sync_blocks,
+)
 
 class TxnMallTest(BitcoinTestFramework):
     def set_test_params(self):
@@ -128,18 +135,11 @@ class TxnMallTest(BitcoinTestFramework):
         # fees (which are negative)
         assert_equal(self.nodes[0].getbalance("foo"), 1219)
         assert_equal(self.nodes[0].getbalance("bar"), 29)
-        assert_equal(self.nodes[0].getbalance(""), starting_balance
+        assert_equal(self.nodes[0].getbalance(""),
-                                                              -1219
+                     starting_balance - 1219 - 29 - 1240 + 100 + fund_foo_tx["fee"] + fund_bar_tx["fee"] + doublespend_fee)
-                                                              -  29
-                                                              -1240
-                                                              + 100
-                                                              + fund_foo_tx["fee"]
-                                                              + fund_bar_tx["fee"]
-                                                              + doublespend_fee)
 
         # Node1's "from0" account balance should be just the doublespend:
         assert_equal(self.nodes[1].getbalance("from0"), 1240)
 
 if __name__ == '__main__':
     TxnMallTest().main()
-