fix: what bandit and the remaining lint rules found

- The six except Exception: pass (REST logout, the extra-ports lookup, the
  per-port detail in get_interfaces, closing CLI and REST sessions) now log
  at debug level (B110), so a swallowed failure leaves a trace.
- nosec for comparing a reported address with 0.0.0.0 (B104) and for the
  empty password field of get_users (B105, now a named constant); both are
  false positives.
- A long error message is split into adjacent f-strings; the unused ARP
  entry type is named _entry_type.
- tests: the failed-open test expects ConnectionException instead of any
  Exception; raise ... from exc.

napalm_procurve/api_client.py

@@ -149,7 +149,7 @@ class ProcurveApiClient:
             try:
                 self._session.delete(self._base_url + "login-sessions", timeout=self.timeout)
             except Exception:
-                pass
+                logger.debug("REST API logout: ignored", exc_info=True)
         if self._session:
             self._session.close()
             self._session = None
@@ -283,7 +283,7 @@ class ProcurveApiClient:
                         )
                         seen_ids.add(pid)
         except Exception:
-            pass
+            logger.debug("system/status/switch for missing ports: ignored", exc_info=True)
 
         for port in port_elements:
             pid = port.get("id", "")
@@ -330,7 +330,8 @@ class ProcurveApiClient:
             for entry in ipv4_data.get("ipv4_element", []):
                 addr = entry.get("address", "")
                 mask = entry.get("mask", "")
-                if not addr or addr == "0.0.0.0":
+                # An unset address reported by the switch, not a bind address.
+                if not addr or addr == "0.0.0.0":  # nosec B104
                     continue
                 try:
                     import netaddr

napalm_procurve/parsers.py

@@ -9,6 +9,9 @@ backends.
 
 import re
 
+#: get_users' password field: the switch never shows a password, so it stays empty.
+_PASSWORD_NOT_SHOWN = ""  # nosec B105
+
 # ---------------------------------------------------------------------------
 # MAC address helpers
 # ---------------------------------------------------------------------------
@@ -330,7 +333,8 @@ def parse_ip_interfaces(output: str) -> dict[str, dict]:
         # Single VLAN output (no header): detect from "IP Address" line
         if re.search(r"IP\s+Address\s*:", line, re.I):
             ip = line.split(":", 1)[-1].strip()
-            if ip and ip not in ("0.0.0.0", ""):
+            # An unset address reported by the switch, not a bind address.
+            if ip and ip != "0.0.0.0":  # nosec B104
                 current_ip = ip
                 if not current_vlan:
                     current_vlan = "VLAN1"
@@ -375,7 +379,7 @@ def parse_arp_table(output: str) -> list[dict]:
         m = _ARP_RE.search(line)
         if not m:
             continue
-        ip, mac, entry_type, port = (m.group(1), m.group(2), m.group(3), m.group(4) or "")
+        ip, mac, _entry_type, port = (m.group(1), m.group(2), m.group(3), m.group(4) or "")
         table.append(
             {
                 "interface": port,
@@ -665,7 +669,7 @@ def parse_users(output: str) -> dict[str, dict]:
             priv = 1
         users[uname] = {
             "level": priv,
-            "password": "",
+            "password": _PASSWORD_NOT_SHOWN,
             "sshkeys": [],
         }
     return users

napalm_procurve/procurve.py

@@ -238,7 +238,7 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
             try:
                 self._device.disconnect()
             except Exception:
-                pass
+                logger.debug("closing the CLI session: ignored", exc_info=True)
             self._device = None
         self._transport = None
 
@@ -556,7 +556,7 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
                 if detail.get("description"):
                     ifaces[port]["description"] = detail["description"]
             except Exception:
-                pass
+                logger.debug("show interfaces %s: ignored", port, exc_info=True)
 
         # The CLI lists member ports only ("3-Trk3"); the trunk gets its own row.
         return add_lag_interfaces(ifaces)
@@ -643,7 +643,7 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
             try:
                 self._api._session.close()
             except Exception:
-                pass
+                logger.debug("closing the REST session: ignored", exc_info=True)
             running = self._get_config_via_ssh()
             return {"running": running, "startup": "", "candidate": ""}
 
@@ -971,7 +971,8 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
             resp = self._api.put(f"ports/{interface}", json=patch)
             if not resp.ok:
                 raise ConnectionException(
-                    f"set_interface({interface}): ports PUT HTTP {resp.status_code} – {resp.text[:200]}"
+                    f"set_interface({interface}): ports PUT HTTP {resp.status_code} – "
+                    f"{resp.text[:200]}"
                 )
         mode = config.get("mode")
         if mode == "trunk":
@@ -1286,7 +1287,7 @@ class ProcurveDriver(ConfigLifecycleMixin, SwitchDriver):
                 try:
                     self._device.disconnect()
                 except Exception:  # noqa: BLE001 - closing a temporary session
-                    pass
+                    logger.debug("closing the temporary CLI session: ignored", exc_info=True)
             self._api, self._device, self._transport = old_api, old_device, old_transport
 
     def _snmp_configure_cli(self, settings: dict[str, Any]) -> dict[str, Any]:

tests/unit/test_driver.py

@@ -535,7 +535,7 @@ class TestDriverTransportDetection:
         with patch("napalm_procurve.procurve.ProcurveApiClient.probe", return_value=(None, None)):
             with patch("napalm_procurve.procurve.ConnectHandler", side_effect=Exception("no conn")):
                 drv = ProcurveDriver("192.168.0.1", "manager", "secret")
-                with pytest.raises(Exception):
+                with pytest.raises(ConnectionException):
                     drv.open()
 
     def test_auth_failure_names_why_earlier_transports_failed(self):

tests/unit/test_ssh_host_key.py

@@ -43,7 +43,7 @@ def _refuse(**kwargs):
     try:
         raise paramiko.BadHostKeyException("10.0.0.4", SERVER_KEY, OTHER_KEY)
     except paramiko.SSHException as exc:
-        raise NetmikoTimeoutException(f"A paramiko SSHException occurred: {exc}")
+        raise NetmikoTimeoutException(f"A paramiko SSHException occurred: {exc}") from exc
 
 
 def _driver(seen: list, known: dict | None = None, **extra) -> ProcurveDriver: