[WIP] work on curses cfg editor

state as of 2026-01-28

Change-Id: I73d2fa4e6fda8820a95fe4e7256c7a23bf565f67

frappy_psi/lakeshore.py

@@ -22,8 +22,6 @@ import time
 import math
 import random
 import threading
-import numpy as np
-from numpy.testing import assert_approx_equal
 
 from frappy.core import Module, Readable, Parameter, Property, \
     HasIO, StringIO, Writable, IDLE, ERROR, BUSY, DISABLED, nopoll, Attached
@@ -32,11 +30,14 @@ from frappy.datatypes import IntRange, FloatRange, StringType, \
 from frappy.errors import CommunicationFailedError, ConfigError, \
     HardwareError, DisabledError, ImpossibleError, secop_error, SECoPError
 from frappy.lib.units import NumberWithUnit, format_with_unit
-from frappy.lib import formatStatusBits
+from frappy.lib import formatStatusBits, LazyImport
 from frappy_psi.convergence import HasConvergence
 from frappy.mixins import HasOutputModule, HasControlledBy
 from frappy.extparams import StructParam
-from frappy_psi.calcurve import CalCurve
+
+np = LazyImport('numpy')
+np_testing = LazyImport('numpy.testing')
+calcurve_module = LazyImport('frappy_psi.calcurve')
 
 
 def string_to_num(string):
@@ -419,7 +420,7 @@ class Device(HasLscIO, Module):
         """check whether a returned calibration point is equal within curve point precision"""
         for v1, v2, eps in zip(left, right, fixeps):
             try:
-                assert_approx_equal(v1, v2, significant, verbose=False)
+                np_testing.assert_approx_equal(v1, v2, significant, verbose=False)
             except AssertionError:
                 return abs(v1 - v2) < eps
         return True
@@ -464,7 +465,7 @@ class CurveRequest:
         self.action = device.find_curve
         self.new_sensors = set()
         self.sensors = {sensor.channel: sensor}
-        calcurve = CalCurve(sensor.calcurve)
+        calcurve = calcurve_module.CalCurve(sensor.calcurve)
         equipment_id = device.propertyValues.get('original_id') or device.secNode.equipment_id
         name = f"{equipment_id.split('.')[0]}.{sensor.name}"
         sn = calcurve.calibname