Default timeout 0.9 seconds, optional type

Author: JohemianKnapsody

src/labthings_picamera2/thing.py

@@ -528,7 +528,7 @@ def snap_image(self) -> ArrayModel:
     def capture_array(
         self,
         stream_name: Literal["main", "lores", "raw"] = "main",
-        wait: float = None,
+        wait: Optional[float] = 0.9,
     ) -> ArrayModel:
         """Acquire one image from the camera and return as an array
 
@@ -537,7 +537,9 @@ def capture_array(
         binary image formats will be added in due course.
 
         stream_name: (Optional) The PiCamera2 stream to use, should be one of ["main", "lores", "raw"]. Default = "main"
-        wait: (Optional, float) Set a timeout in seconds. A TimeoutError is raised if this time is exceeded during capture. Default = None
+        wait: (Optional, float) Set a timeout in seconds.
+        A TimeoutError is raised if this time is exceeded during capture.
+        Default = 0.9s, lower than the 1s timeout default in picamera yaml settings
         """
         with self.picamera() as cam:
             return cam.capture_array(stream_name, wait = wait)
@@ -548,15 +550,17 @@ def capture_raw(
         states_getter: GetThingStates,
         get_states: bool=True,
         get_processing_inputs: bool=True,
-        wait: float=None,
+        wait: Optional[float] = 0.9,
     ) -> RawImageModel:
         """Capture a raw image
         
         This function is intended to be as fast as possible, and will return
         as soon as an image has been captured. The output format is not intended
         to be useful, except as input to `raw_to_png`. 
 
-        wait: (Optional, float) Set a timeout in seconds. A TimeoutError is raised if this time is exceeded during capture. Default = None
+        wait: (Optional, float) Set a timeout in seconds.
+        A TimeoutError is raised if this time is exceeded during capture.
+        Default = 0.9s, lower than the 1s timeout default in picamera yaml settings
 
         When used via the HTTP interface, this function returns the data as a
         `Blob` object, meaning it can be passed to another action without
@@ -705,7 +709,7 @@ def capture_jpeg(
         self,
         metadata_getter: GetThingStates,
         resolution: Literal["lores", "main", "full"] = "main",
-        wait: float = None,
+        wait: Optional[float] = 0.9,
     ) -> JPEGBlob:
         """Acquire one image from the camera as a JPEG
 
@@ -720,7 +724,8 @@ def capture_jpeg(
         resolution image.
 
         wait: (Optional, float) Set a timeout in seconds.
-        A TimeoutError is raised if this time is exceeded during capture. Default = None
+        A TimeoutError is raised if this time is exceeded during capture.
+        Default = 0.9s, lower than the 1s timeout default in picamera yaml settings
 
         Note that this always uses the image processing pipeline - to
         bypass this, you must use a raw capture.