fix deprecation error attribute

davidhassell · davidhassell · commit 99cffd46d369 · 2022-04-22T08:45:58.000+01:00
diff --git a/cf/data/mixin/deprecations.py b/cf/data/mixin/deprecations.py
@@ -111,9 +111,6 @@ def in_memory(self):
         """True if the array is retained in memory.
 
         Deprecated at version TODODASK.
-        **Examples**
-
-        >>> d.in_memory
 
         """
         _DEPRECATION_ERROR_ATTRIBUTE(
diff --git a/cf/functions.py b/cf/functions.py
@@ -3204,11 +3204,10 @@ def _DEPRECATION_ERROR_METHOD(
 def _DEPRECATION_ERROR_ATTRIBUTE(
     instance, attribute, message="", version="3.0.0", removed_at="4.0.0"
 ):
-    warnings.warn(
+    raise DeprecationError(
         f"{instance.__class__.__name__} attribute {attribute!r} has been "
         f"deprecated at version {version} and will be removed at version "
-        f"{removed_at}. {message}",
-        DeprecationWarning,
+        f"{removed_at}. {message}"
     )
 
 
