Hot fix mypy on dataclass

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Moving of `_snicaddr` in psutil package v2.7 from `_common` to `_ntuples` module, which caused an error with `qmi_proc`.
 - Process management logging path now resolves correctly also for cases where the config file path starts with the `~`, indicating home directory location.
 - Issue with Python 3.14 compatibility in `QMI_Context` class. Addition of `run` method with specific input parameter fixes the issue.
+- Instrument drivers `tsl_570.py`, `wltf_n.py` and `tfn.py` have now default values in dataclasses which are initiated in the driver class constructor. This is done to avoid Mypy error: 'Cannot access instance-only attribute "<attr>" on class object  [misc]"
 
 ### Removed
 - Removed `xdrlib-py` import for Python 3.13 version, where it was needed for python-vxi11 package.

qmi/instruments/santec/tsl_570.py

@@ -4,7 +4,6 @@
 
 import logging
 from dataclasses import dataclass
-from typing import List, Union
 
 from qmi.core.context import QMI_Context
 from qmi.core.exceptions import QMI_InstrumentException
@@ -21,24 +20,24 @@
 class _WavelengthRange:
     """Dataclass for wavelength instrument range."""
 
-    min: float
-    max: float
+    min: float = 0.0
+    max: float = 0.0
 
 
 @dataclass
 class _FrequencyRange:
     """Dataclass for frequency instrument range."""
 
-    min: float
-    max: float
+    min: float = 0.0
+    max: float = 0.0
 
 
 @dataclass
 class _PowerLevelRange:
     """Dataclass for power level instrument range."""
 
-    min: float
-    max: float
+    min: float = 0.0
+    max: float = 0.0
 
 
 class Santec_Tsl570(QMI_Instrument):
@@ -106,11 +105,11 @@ def __init__(self, context: QMI_Context, name: str, transport: str) -> None:
             default_timeout=self.DEFAULT_RESPONSE_TIMEOUT,
         )
         # Instrument ranges for values
-        self._wavelength_range = _WavelengthRange
-        self._frequency_range = _FrequencyRange
-        self._power_level_range = _PowerLevelRange
+        self._wavelength_range = _WavelengthRange()
+        self._frequency_range = _FrequencyRange()
+        self._power_level_range = _PowerLevelRange()
 
-    def _check_error(self) -> List[str]:
+    def _check_error(self) -> list[str]:
         """Read the instrument error queue and raise an exception if there is an error.
 
         Returns:
@@ -219,7 +218,7 @@ def get_idn(self) -> QMI_InstrumentIdentification:
 
         Returns:
             QMI_InstrumentIdentification: Data with e.g. idn.vendor = SANTEC, idn.model = TSL-570,
-            idn.serial = 21020001, idn.version = 0001.000.0001 (firmware version).
+                                          idn.serial = 21020001, idn.version = 0001.000.0001 (firmware version).
         """
         resp = self._scpi_protocol.ask("*IDN?")
         words = resp.rstrip().split(",")
@@ -238,7 +237,8 @@ def reset(self) -> None:
     @rpc_method
     def clear(self) -> None:
         """Clear Status. Clears all event registers and queues and reflects the summary in the Status Byte Register.
-        Clears the following items.
+
+        Clears the following items:
         ・Status Byte Register
         ・Standard Event Status Register
         ・Error Queue
@@ -257,7 +257,7 @@ def operation_complete(self) -> bool:
         return response
 
     @rpc_method
-    def get_errors(self) -> List[str]:
+    def get_errors(self) -> list[str]:
         """Query all errors and alerts.
 
         Returns:
@@ -416,7 +416,7 @@ def disable_finetuning_operation(self) -> None:
         self._write_and_check_errors(":WAV:FIN:DIS")
 
     @rpc_method
-    def set_coherence_control_status(self, status: Union[bool, str]) -> None:
+    def set_coherence_control_status(self, status: bool | str) -> None:
         """Set the Coherence control status.
 
         Parameters:
@@ -445,7 +445,7 @@ def get_coherence_control_status(self) -> str:
         return "ON" if status else "OFF"
 
     @rpc_method
-    def set_optical_output_status(self, status: Union[bool, str]) -> None:
+    def set_optical_output_status(self, status: bool | str) -> None:
         """Set the optical output status.
 
         Parameters:
@@ -607,7 +607,7 @@ def set_sweep_start_frequency(self, frequency: float) -> None:
         """Set the start frequency for a sweep.
 
         Parameters:
-            frequency: frequency in terahertz.
+            frequency: Frequency in terahertz.
         """
         unit = "THz"
         dec = 4  # 10 MHz resolution
@@ -634,7 +634,7 @@ def set_sweep_stop_frequency(self, frequency: float) -> None:
         """Set the stop frequency for a sweep.
 
         Parameters:
-            frequency: frequency in terahertz.
+            frequency: Frequency in terahertz.
         """
         unit = "THz"
         dec = 4  # 10 MHz resolution
@@ -721,7 +721,7 @@ def get_sweep_dwell(self) -> float:
         """Get dwell between sweep steps.
 
         Returns:
-            dwell: dwell in range [0, 1000[s.
+            dwell: Dwell in range [0, 1000[s.
         """
         return self._ask_float(":WAV:SWE:DWEL?")
 
@@ -744,7 +744,7 @@ def get_sweep_delay(self) -> float:
         """Get delay between sweeps.
 
         Returns:
-            delay: delay in range [0, 1000[s.
+            delay: Delay in range [0, 1000[s.
         """
         return self._ask_float(":WAV:SWE:DEL?")
 
@@ -869,7 +869,7 @@ def get_trigger_output_step(self) -> float:
         """Get trigger output step.
 
         Returns:
-            step: step in range [0.0001, max wavelength]nm.
+            step: Step in range [0.0001, max wavelength]nm.
         """
         return self._ask_float(":TRIG:OUTP:STEP?")
 
@@ -888,7 +888,7 @@ def readout_points(self) -> int:
         return int(self._scpi_protocol.ask(":READ:POIN?"))
 
     @rpc_method
-    def readout_data(self) -> List[float]:
+    def readout_data(self) -> list[float]:
         """Read out wavelength logging data and convert it into floating point values. According to the manual
         the data points are returned in units of 0.1pm. Thus, value 0x0040F844 (little Endian order) = 4520000
         corresponds to 452.0000nm.