diff --git a/mmgen/addrlist.py b/mmgen/addrlist.py
index 1a43ec3e..4c0536a6 100755
--- a/mmgen/addrlist.py
+++ b/mmgen/addrlist.py
@@ -186,7 +186,9 @@ class AddrList(MMGenObject): # Address info for a single seed ID
 		if seed and addr_idxs:   # data from seed + idxs
 			self.al_id = AddrListID(sid=seed.sid, mmtype=MMGenAddrType(proto, mmtype or proto.dfl_mmtype))
 			src = 'gen'
-			adata = self.generate(seed, addr_idxs if isinstance(addr_idxs, AddrIdxList) else AddrIdxList(addr_idxs))
+			adata = self.generate(
+				seed,
+				addr_idxs if isinstance(addr_idxs, AddrIdxList) else AddrIdxList(addr_idxs))
 			do_chksum = True
 		elif infile:             # data from MMGen address file
 			self.infile = infile
diff --git a/mmgen/bip_hd/__init__.py b/mmgen/bip_hd/__init__.py
index a76222ea..9765cda5 100644
--- a/mmgen/bip_hd/__init__.py
+++ b/mmgen/bip_hd/__init__.py
@@ -193,7 +193,13 @@ class MasterNode(Lockable):
 
 		new = BipHDNodeMaster()
 
-		new.cfg       = BipHDConfig(self.base_cfg, coin, network, addr_type, from_path, no_path_checks)
+		new.cfg = BipHDConfig(
+			self.base_cfg,
+			coin,
+			network,
+			addr_type,
+			from_path,
+			no_path_checks)
 		new.par_print = self.par_print
 		new.depth     = self.depth
 		new.key       = self.key
diff --git a/mmgen/led.py b/mmgen/led.py
index 75a127de..9e1c7716 100755
--- a/mmgen/led.py
+++ b/mmgen/led.py
@@ -33,7 +33,13 @@ class LEDControl:
 	class binfo(Lockable):
 		_reset_ok = ('trigger_reset',)
 
-		def __init__(self, name, control, trigger=None, trigger_dfl='heartbeat', trigger_disable='none'):
+		def __init__(
+				self,
+				name,
+				control,
+				trigger         = None,
+				trigger_dfl     = 'heartbeat',
+				trigger_disable = 'none'):
 			self.name = name
 			self.control = control
 			self.trigger = trigger
diff --git a/mmgen/passwdlist.py b/mmgen/passwdlist.py
index 793e3b93..763e8005 100755
--- a/mmgen/passwdlist.py
+++ b/mmgen/passwdlist.py
@@ -126,22 +126,18 @@ class PasswordList(AddrList):
 			die('InvalidPasswdFormat',
 				f'{self.pw_fmt!r}: invalid password format.  Valid formats: {", ".join(self.pw_info)}')
 
-	def chk_pw_len(self, passwd=None):
-		if passwd is None:
-			assert self.pw_len, 'either passwd or pw_len must be set'
-			pw_len = self.pw_len
-			fs = '{l}: invalid user-requested length for {b} ({c}{m})'
-		else:
-			pw_len = len(passwd)
-			fs = '{pw}: {b} has invalid length {l} ({c}{m} characters)'
+	def chk_pw_len(self):
+		assert self.pw_len, 'pw_len must be set'
+		pw_len = self.pw_len
+		fs = '{l}: invalid user-requested length for {b} ({c}{m})'
 		d = self.pw_info[self.pw_fmt]
 		if d.valid_lens:
 			if pw_len not in d.valid_lens:
-				die(2, fs.format(l=pw_len, b=d.desc, c='not one of ', m=d.valid_lens, pw=passwd))
+				die(2, fs.format(l=pw_len, b=d.desc, c='not one of ', m=d.valid_lens))
 		elif pw_len > d.max_len:
-			die(2, fs.format(l=pw_len, b=d.desc, c='>', m=d.max_len, pw=passwd))
+			die(2, fs.format(l=pw_len, b=d.desc, c='>', m=d.max_len))
 		elif pw_len < d.min_len:
-			die(2, fs.format(l=pw_len, b=d.desc, c='<', m=d.min_len, pw=passwd))
+			die(2, fs.format(l=pw_len, b=d.desc, c='<', m=d.min_len))
 
 	def set_pw_len(self, pw_len):
 		d = self.pw_info[self.pw_fmt]
diff --git a/mmgen/proto/btc/params.py b/mmgen/proto/btc/params.py
index 815d0e12..bcbb4f7a 100755
--- a/mmgen/proto/btc/params.py
+++ b/mmgen/proto/btc/params.py
@@ -65,7 +65,7 @@ class mainnet(CoinProtocol.Secp256k1): # chainparams.cpp
 		'cashaddr',
 	)
 
-	def encode_wif(self, privbytes, pubkey_type, compressed): # input is preprocessed hex
+	def encode_wif(self, privbytes, pubkey_type, compressed): # input is preprocessed
 		assert len(privbytes) == self.privkey_len, f'{len(privbytes)} bytes: incorrect private key length!'
 		assert pubkey_type in self.wif_ver_bytes, f'{pubkey_type!r}: invalid pubkey_type'
 		return b58chk_encode(
diff --git a/mmgen/proto/btc/tx/completed.py b/mmgen/proto/btc/tx/completed.py
index 0d3d3587..5a09a82c 100755
--- a/mmgen/proto/btc/tx/completed.py
+++ b/mmgen/proto/btc/tx/completed.py
@@ -75,10 +75,6 @@ class Completed(Base, TxBase.Completed):
 					'scriptPubKey:',          i.scriptPubKey,
 					'scriptPubKey->address:', ds.addr))
 
-#	def is_replaceable_from_rpc(self):
-#		dec_tx = await self.rpc.call('decoderawtransaction', self.serialized)
-#		return None < dec_tx['vin'][0]['sequence'] <= self.proto.max_int - 2
-
 	def is_replaceable(self):
 		return self.inputs[0].sequence == self.proto.max_int - 2
 
diff --git a/mmgen/proto/btc/tx/new.py b/mmgen/proto/btc/tx/new.py
index 4594c61c..4618c66b 100755
--- a/mmgen/proto/btc/tx/new.py
+++ b/mmgen/proto/btc/tx/new.py
@@ -125,7 +125,10 @@ class New(Base, TxNew):
 	def final_inputs_ok_msg(self, funds_left):
 		return 'Transaction produces {} {} in change'.format(funds_left.hl(), self.coin)
 
-	def check_chg_addr_is_wallet_addr(self, output=None, message='Change address is not an MMGen wallet address!'):
+	def check_chg_addr_is_wallet_addr(
+			self,
+			output  = None,
+			message = 'Change address is not an MMGen wallet address!'):
 		def do_err():
 			from ....ui import confirm_or_raise
 			confirm_or_raise(
diff --git a/mmgen/proto/eth/rpc.py b/mmgen/proto/eth/rpc.py
index be55291f..96eb869c 100755
--- a/mmgen/proto/eth/rpc.py
+++ b/mmgen/proto/eth/rpc.py
@@ -82,7 +82,8 @@ class EthereumRPCClient(RPCClient, metaclass=AsyncInit):
 		if self.daemon.id in ('parity', 'openethereum'):
 			if (await self.call('parity_nodeKind'))['capability'] == 'full':
 				self.caps += ('full_node',)
-			self.chainID = None if ci is None else Int(ci, 16) # parity/oe return chainID only for dev chain
+			# parity/openethereum return chainID only for dev chain:
+			self.chainID = None if ci is None else Int(ci, 16)
 			self.chain = (await self.call('parity_chain')).replace(' ', '_').replace('_testnet', '')
 		elif self.daemon.id in ('geth', 'reth', 'erigon'):
 			if self.daemon.network == 'mainnet':
diff --git a/test/test-release.d/cfg.sh b/test/test-release.d/cfg.sh
index fdc56435..0af8a16e 100755
--- a/test/test-release.d/cfg.sh
+++ b/test/test-release.d/cfg.sh
@@ -72,7 +72,8 @@ init_tests() {
 	"
 
 	[ "$VERBOSE" ] || STDOUT_DEVNULL='> /dev/null'
-	d_lint="code errors with static code analyzer"
+	d_lint="code errors with Ruff static code analyzer"
+	e_lint="Error checking failed!"
 	t_lint="
 		b ruff check setup.py $STDOUT_DEVNULL
 		b ruff check mmgen $STDOUT_DEVNULL
@@ -81,7 +82,7 @@ init_tests() {
 	"
 
 	PYLINT_OPTS='--errors-only --jobs=0'
-	d_pylint="code errors with static code analyzer"
+	d_pylint="code errors with Pylint static code analyzer"
 	e_pylint="Error checking failed!"
 	t_pylint="
 		b $pylint $PYLINT_OPTS mmgen