adding and removing a property

py25/bacpypes/constructeddata.py

@@ -600,6 +600,11 @@ def ArrayOf(klass):
             # not found
             raise ValueError("%r not in array" % (value,))
 
+        def remove(self, item):
+            # find the index of the item and delete it
+            indx = self.index(item)
+            self.__delitem__(indx)
+
         def encode(self, taglist):
             if _debug: ArrayOf._debug("(%r)encode %r", self.__class__.__name__, taglist)
 

py27/bacpypes/constructeddata.py

@@ -598,6 +598,11 @@ def ArrayOf(klass):
             # not found
             raise ValueError("%r not in array" % (value,))
 
+        def remove(self, item):
+            # find the index of the item and delete it
+            indx = self.index(item)
+            self.__delitem__(indx)
+
         def encode(self, taglist):
             if _debug: ArrayOf._debug("(%r)encode %r", self.__class__.__name__, taglist)
 

py34/bacpypes/constructeddata.py

@@ -598,6 +598,11 @@ def ArrayOf(klass):
             # not found
             raise ValueError("%r not in array" % (value,))
 
+        def remove(self, item):
+            # find the index of the item and delete it
+            indx = self.index(item)
+            self.__delitem__(indx)
+
         def encode(self, taglist):
             if _debug: ArrayOf._debug("(%r)encode %r", self.__class__.__name__, taglist)
 

sandbox/add_remove_property.py

@@ -0,0 +1,59 @@
+
+from bacpypes.basetypes import PropertyIdentifier
+from bacpypes.constructeddata import ArrayOf
+from bacpypes.object import AnalogValueObject
+
+# create an array of property identifiers datatype
+ArrayOfPropertyIdentifier = ArrayOf(PropertyIdentifier)
+
+aopi = ArrayOfPropertyIdentifier()
+aopi.append('objectName')
+aopi.append('objectType')
+aopi.append('description')
+aopi.debug_contents()
+
+aopi.remove('objectType')
+aopi.debug_contents()
+
+print("Create an Analog Value Object")
+av = AnalogValueObject(
+    objectName='av-sample',
+    objectIdentifier=('analogValue', 1),
+    description="sample",
+    )
+av.debug_contents()
+print("")
+
+print("Change the description")
+av.description = "something else"
+av.debug_contents()
+print("")
+
+
+# get the description property by the attribute name
+description_property = av._attr_to_property('description')
+print("description_property = %r" % (description_property,))
+print("")
+
+print("Delete the property")
+av.delete_property(description_property)
+print("...property deleted")
+
+try:
+    av.description = "this raises an exception"
+except Exception as err:
+    print(repr(err))
+av.debug_contents()
+print("")
+
+print("===== Add the property")
+av.add_property(description_property)
+print("...property added")
+
+try:
+    av.description = "this works"
+except Exception as err:
+    print(repr(err))
+av.debug_contents()
+print("")
+