raise a TypeError when passing DataArray to Variable

Author: keewis

xarray/core/variable.py

@@ -116,14 +116,9 @@ def as_variable(obj, name=None) -> "Union[Variable, IndexVariable]":
         obj = obj.copy(deep=False)
     elif isinstance(obj, tuple):
         if isinstance(obj[1], DataArray):
-            # TODO: change into TypeError
-            warnings.warn(
-                (
-                    "Using a DataArray object to construct a variable is"
-                    " ambiguous, please extract the data using the .data property."
-                    " This will raise a TypeError in 0.19.0."
-                ),
-                DeprecationWarning,
+            raise TypeError(
+                "Using a DataArray object to construct a variable is"
+                " ambiguous, please extract the data using the .data property."
             )
         try:
             obj = Variable(*obj)