Map nan values to None (#458)

pyproject.toml

@@ -11,7 +11,7 @@ dependencies = [
     "appdirs>=1.4.4",
     "attrs>=24.3.0",
     "deprecated>=1.2.15",
-    "gql[requests,websockets]>=3.5.0",
+    "gql[requests,websockets]>=3.5.0,<4.0.0",
     "httpx>=0.28.1",
     "pydantic>=2.10.5",
     "pydantic-settings>=2.7.1",

src/speckleifc/importer.py

@@ -54,9 +54,10 @@ class ImportJob:
             )
 
         children = self._convert_children(step_element)
-        display_value = self.cached_display_values.get(step_element.id(), [])
+        id = step_element.id()
+        display_value = self.cached_display_values.get(id, [])
 
-        if display_value is not None:
+        if display_value:
             self.geometries_used += 1
 
         # Extract current storey name from DataObject if available

src/speckleifc/property_extraction.py

@@ -1,3 +1,4 @@
+import math
 from typing import Any, Tuple
 
 from ifcopenshell.entity_instance import entity_instance
@@ -134,6 +135,10 @@ def _get_quantities(
             value = getattr(quantity, quantity.attribute_name(3))
             unit_info = _get_unit_info(element, quantity)
 
+            # Server does not consider `NaN` valid json
+            if math.isnan(value):
+                value = None
+
             if unit_info:
                 # Create structured quantity object with units
                 results[quantity_name] = {