deprecate imported dune-grid enums

CMakeLists.txt

 add_python_targets(common
   __init__
   compatibility
+  deprecated
   module
   checkconfiguration
   hashit

__init__.py

@@ -22,7 +22,16 @@ except ImportError:
     logger.info('mpi4py not found, MPI not initialized')
 
 from ._common import *
+from .deprecated import DeprecatedObject
+
 from ..grid._grid import CommunicationDirection, DataType, InterfaceType, Marker, OutputType, PartitionType, reader
+CommunicationDirection = DeprecatedObject(CommunicationDirection, "dune.common.CommunicationDirection is deprecated, use dune.grid.CommunicationDirection instead")
+DataType = DeprecatedObject(DataType, "dune.common.DataType is deprecated, use dune.grid.DataType instead")
+InterfaceType = DeprecatedObject(InterfaceType, "dune.common.Interface is deprecated, use dune.grid.InterfaceType instead")
+Marker = DeprecatedObject(Marker, "dune.common.Marker is deprecated, use dune.grid.Marker instead")
+OutputType = DeprecatedObject(OutputType, "dune.common.OutputType is deprecated, use dune.grid.OutputType instead")
+PartitionType = DeprecatedObject(PartitionType, "dune.common.PartitionType is deprecated, use dune.grid.PartitionType instead")
+reader = DeprecatedObject(reader, "dune.common.reader is deprecated, use dune.grid.reader instead")
 
 import numpy
 def fvgetitem(self,index):

deprecated.py

+import logging
+
+class DeprecatedObject(object):
+    def __init__(self, real, message):
+        self.real = real
+        self.logger = logging.getLogger(real.__module__)
+        self.message = message
+
+    def __call__(self, *args, **kwargs):
+        object.__getattribute__(self, "logger").warning(object.__getattribute__(self, "message"))
+        return object.__getattribute__(self, "real")(*args, **kwargs)
+
+    def __getattribute__(self, name):
+        object.__getattribute__(self, "logger").warning(object.__getattribute__(self, "message"))
+        return getattr(object.__getattribute__(self, "real"), name)
+
+    def __repr__(self):
+        object.__getattribute__(self, "logger").warning(object.__getattribute__(self, "message"))
+        return repr(object.__getattribute__(self, "real"))