Moved imports out of inline to top level

backend/hardware/gpiochip/core.py

@@ -3,16 +3,25 @@
 and the individual files for configuration information.
 """
 
+from hardware.gpiochip.gpiod_simulation import GPIODChipSimulation
+from hardware.gpiochip.gpiod_chipset import GPIODChipset
+
+IMPORT_ERROR = False
+
+# We check for an import error here as this ikmport requires the gpiod python library
+# to be installed, which is not a requirement
+try:
+    from hardware.gpiochip.gpiod import GPIODChip
+except ModuleNotFoundError:
+    IMPORT_ERROR = True
+
 
 def createGPIOChip(gpioConfig: dict, devices: dict):
     gpioType = gpioConfig['implementation']
-    if gpioType == "gpiod":
-        from hardware.gpiochip.gpiod import GPIODChip
+    if gpioType == "gpiod" and not IMPORT_ERROR:
         return GPIODChip(gpioConfig)
     if gpioType == "simulation":
-        from hardware.gpiochip.gpiod_simulation import GPIODChipSimulation
         return GPIODChipSimulation(gpioConfig)
     if gpioType == "gpiod_chipset":
-        from hardware.gpiochip.gpiod_chipset import GPIODChipset
         return GPIODChipset(gpioConfig, devices)
     raise Exception("Unsupported gpiochiptype")

backend/hardware/thermometer/core.py

@@ -3,16 +3,17 @@
 and either the individual files or backend/config.py for configuration information.
 """
 
+from hardware.thermometer.w1_therm import W1TempSensor
+from hardware.thermometer.serial import SerialTempSensor
+from hardware.thermometer.serial_simulation import SerialTempSensorSimulation
+
 
 def createThermometer(thermometerConfig: dict, devices: dict):
     thermometerType = thermometerConfig['implementation']
     if thermometerType == "w1_therm":
-        from hardware.thermometer.w1_therm import W1TempSensor
         return W1TempSensor()
     elif thermometerType == "serial":
-        from hardware.thermometer.serial import SerialTempSensor
         return SerialTempSensor(thermometerConfig)
     elif thermometerType == "simulation":
-        from hardware.thermometer.serial_simulation import SerialTempSensorSimulation
         return SerialTempSensorSimulation(thermometerConfig)
     raise Exception("Unsupported thermometer type")

backend/microlab/core.py

@@ -1,8 +1,17 @@
 """
 Contains function for starting up the microlab process
 """
+import logging
+import sys
+import time
 import threading
+import signal
 
+import hardware.devicelist
+import recipes.core
+import recipes.state
+
+from config import microlabConfig as config
 from hardware.core import MicroLabHardware
 
 HALT = threading.Event()
@@ -64,16 +73,6 @@ def startMicrolabProcess(in_queue, out_queue):
                 (False, message) on failure.
             reference "selectOption" in /recipes/__init__.py for more info
     """
-    import logging
-    import sys
-    import time
-
-    import hardware.devicelist
-    import recipes.core
-    import recipes.state
-    import signal
-    from config import microlabConfig as config
-
     microlabHardware = MicroLabHardware.get_microlab_hardware_controller()
 
     def runMicrolab():