You can now add / remove cost schedules

src/ifcopenshell-python/ifcopenshell/api/cost/data.py

@@ -0,0 +1,24 @@
+import ifcopenshell.util.date
+
+
+class Data:
+    is_loaded = False
+    cost_schedules = {}
+
+    @classmethod
+    def purge(cls):
+        cls.is_loaded = False
+        cls.cost_schedules = {}
+
+    @classmethod
+    def load(cls, file):
+        cls.cost_schedules = {}
+        for cost_schedule in file.by_type("IfcCostSchedule"):
+            data = cost_schedule.get_info()
+            del data["OwnerHistory"]
+            if data["SubmittedOn"]:
+                data["SubmittedOn"] = ifcopenshell.util.date.ifc2datetime(data["SubmittedOn"])
+            if data["UpdateDate"]:
+                data["UpdateDate"] = ifcopenshell.util.date.ifc2datetime(data["UpdateDate"])
+            cls.cost_schedules[cost_schedule.id()] = data
+        cls.is_loaded=True