diff --git a/contrib/devtools/clang-format-diff.py b/contrib/devtools/clang-format-diff.py
index 13d2573b9..7ea49b65e 100755
--- a/contrib/devtools/clang-format-diff.py
+++ b/contrib/devtools/clang-format-diff.py
@@ -128,7 +128,7 @@ def main():
         line_count = int(match.group(3))
       if line_count == 0:
         continue
-      end_line = start_line + line_count - 1;
+      end_line = start_line + line_count - 1
       lines_by_file.setdefault(filename, []).extend(
           ['-lines', str(start_line) + ':' + str(end_line)])
 
@@ -147,7 +147,7 @@ def main():
                          stderr=None, stdin=subprocess.PIPE)
     stdout, stderr = p.communicate()
     if p.returncode != 0:
-      sys.exit(p.returncode);
+      sys.exit(p.returncode)
 
     if not args.i:
       with open(filename) as f:
diff --git a/contrib/devtools/optimize-pngs.py b/contrib/devtools/optimize-pngs.py
index 0f653e010..9286ab731 100755
--- a/contrib/devtools/optimize-pngs.py
+++ b/contrib/devtools/optimize-pngs.py
@@ -39,7 +39,7 @@ for folder in folders:
         if extension.lower() == '.png':
             print("optimizing "+file+"..."),
             file_path = os.path.join(absFolder, file)
-            fileMetaMap = {'file' : file, 'osize': os.path.getsize(file_path), 'sha256Old' : file_hash(file_path)};
+            fileMetaMap = {'file' : file, 'osize': os.path.getsize(file_path), 'sha256Old' : file_hash(file_path)}
             fileMetaMap['contentHashPre'] = content_hash(file_path)
         
             pngCrushOutput = ""
diff --git a/contrib/zmq/zmq_sub.py b/contrib/zmq/zmq_sub.py
index 6f57aa47e..5707188f2 100755
--- a/contrib/zmq/zmq_sub.py
+++ b/contrib/zmq/zmq_sub.py
@@ -22,7 +22,7 @@ try:
         msg = zmqSubSocket.recv_multipart()
         topic = str(msg[0])
         body = msg[1]
-        sequence = "Unknown";
+        sequence = "Unknown"
         if len(msg[-1]) == 4:
           msgSequence = struct.unpack('<I', msg[-1])[-1]
           sequence = str(msgSequence)
diff --git a/qa/rpc-tests/fundrawtransaction.py b/qa/rpc-tests/fundrawtransaction.py
index b279c0b9d..7396ba46a 100755
--- a/qa/rpc-tests/fundrawtransaction.py
+++ b/qa/rpc-tests/fundrawtransaction.py
@@ -226,7 +226,7 @@ class RawTransactionsTest(BitcoinTestFramework):
             assert(False)
         rawtxfund = self.nodes[2].fundrawtransaction(rawtx, {'changeAddress': change, 'changePosition': 0})
         dec_tx  = self.nodes[2].decoderawtransaction(rawtxfund['hex'])
-        out = dec_tx['vout'][0];
+        out = dec_tx['vout'][0]
         assert_equal(change, out['scriptPubKey']['addresses'][0])
 
 
diff --git a/qa/rpc-tests/importmulti.py b/qa/rpc-tests/importmulti.py
index 5c536f2f4..e100a3af9 100755
--- a/qa/rpc-tests/importmulti.py
+++ b/qa/rpc-tests/importmulti.py
@@ -108,7 +108,7 @@ class ImportMultiTest (BitcoinTestFramework):
             "scriptPubKey": address['scriptPubKey'],
             "pubkeys": [ address['pubkey'] ],
             "internal": True
-        }];
+        }]
         result = self.nodes[1].importmulti(request)
         assert_equal(result[0]['success'], True)
         address_assert = self.nodes[1].validateaddress(address['address'])
@@ -121,7 +121,7 @@ class ImportMultiTest (BitcoinTestFramework):
         request = [{
             "scriptPubKey": address['scriptPubKey'],
             "pubkeys": [ address['pubkey'] ]
-        }];
+        }]
         result = self.nodes[1].importmulti(request)
         assert_equal(result[0]['success'], False)
         assert_equal(result[0]['error']['code'], -8)
@@ -197,7 +197,7 @@ class ImportMultiTest (BitcoinTestFramework):
         self.nodes[1].generate(100)
         transactionid = self.nodes[1].sendtoaddress(multi_sig_script['address'], 10.00)
         self.nodes[1].generate(1)
-        transaction = self.nodes[1].gettransaction(transactionid);
+        transaction = self.nodes[1].gettransaction(transactionid)
 
         print("Should import a p2sh")
         result = self.nodes[1].importmulti([{
@@ -222,7 +222,7 @@ class ImportMultiTest (BitcoinTestFramework):
         self.nodes[1].generate(100)
         transactionid = self.nodes[1].sendtoaddress(multi_sig_script['address'], 10.00)
         self.nodes[1].generate(1)
-        transaction = self.nodes[1].gettransaction(transactionid);
+        transaction = self.nodes[1].gettransaction(transactionid)
 
         print("Should import a p2sh with respective redeem script")
         result = self.nodes[1].importmulti([{
@@ -246,7 +246,7 @@ class ImportMultiTest (BitcoinTestFramework):
         self.nodes[1].generate(100)
         transactionid = self.nodes[1].sendtoaddress(multi_sig_script['address'], 10.00)
         self.nodes[1].generate(1)
-        transaction = self.nodes[1].gettransaction(transactionid);
+        transaction = self.nodes[1].gettransaction(transactionid)
 
         print("Should import a p2sh with respective redeem script and private keys")
         result = self.nodes[1].importmulti([{
@@ -270,7 +270,7 @@ class ImportMultiTest (BitcoinTestFramework):
         self.nodes[1].generate(100)
         transactionid = self.nodes[1].sendtoaddress(multi_sig_script['address'], 10.00)
         self.nodes[1].generate(1)
-        transaction = self.nodes[1].gettransaction(transactionid);
+        transaction = self.nodes[1].gettransaction(transactionid)
 
         print("Should import a p2sh with respective redeem script and private keys")
         result = self.nodes[1].importmulti([{
@@ -312,7 +312,7 @@ class ImportMultiTest (BitcoinTestFramework):
             "scriptPubKey": address['scriptPubKey'],
             "pubkeys": [ address2['pubkey'] ],
             "internal": True
-        }];
+        }]
         result = self.nodes[1].importmulti(request)
         assert_equal(result[0]['success'], False)
         assert_equal(result[0]['error']['code'], -5)
diff --git a/qa/rpc-tests/p2p-feefilter.py b/qa/rpc-tests/p2p-feefilter.py
index 96d99d38a..86ce0b42e 100755
--- a/qa/rpc-tests/p2p-feefilter.py
+++ b/qa/rpc-tests/p2p-feefilter.py
@@ -21,9 +21,9 @@ def allInvsMatch(invsExpected, testnode):
     for x in range(60):
         with mininode_lock:
             if (sorted(invsExpected) == sorted(testnode.txinvs)):
-                return True;
+                return True
         time.sleep(1)
-    return False;
+    return False
 
 # TestNode: bare-bones "peer".  Used to track which invs are received from a node
 # and to send the node feefilter messages.
diff --git a/qa/rpc-tests/p2p-segwit.py b/qa/rpc-tests/p2p-segwit.py
index 51adec5ca..a7858ad3d 100755
--- a/qa/rpc-tests/p2p-segwit.py
+++ b/qa/rpc-tests/p2p-segwit.py
@@ -1662,7 +1662,7 @@ class SegWitTest(BitcoinTestFramework):
         # too many sigops (contributing to legacy sigop count).
         checksig_count = (extra_sigops_available // 4) + 1
         scriptPubKey_checksigs = CScript([OP_CHECKSIG]*checksig_count)
-        tx2.vout.append(CTxOut(0, scriptPubKey_checksigs));
+        tx2.vout.append(CTxOut(0, scriptPubKey_checksigs))
         tx2.vin.pop()
         tx2.wit.vtxinwit.pop()
         tx2.vout[0].nValue -= tx.vout[-2].nValue
diff --git a/qa/rpc-tests/segwit.py b/qa/rpc-tests/segwit.py
index be6fae508..299f5387e 100755
--- a/qa/rpc-tests/segwit.py
+++ b/qa/rpc-tests/segwit.py
@@ -39,7 +39,7 @@ def addlength(script):
     return scriptlen + script
 
 def create_witnessprogram(version, node, utxo, pubkey, encode_p2sh, amount):
-    pkscript = witness_script(version, pubkey);
+    pkscript = witness_script(version, pubkey)
     if (encode_p2sh):
         p2sh_hash = bytes_to_hex_str(ripemd160(sha256(hex_str_to_bytes(pkscript))))
         pkscript = "a914"+p2sh_hash+"87"