DPF mesh.mesh_get_attribute error

cvaero

Code:

from ansys.dpf import core as dpf
dpf.__version__

mesh_attr_op = dpf.operators.mesh.mesh_get_attribute()


'0.8.1'

Returns:

'0.8.1'


---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
Cell In[8], line 1
----> 1 mesh_attr_op = dpf.operators.mesh.mesh_get_attribute()
      2 print(mesh_attr_op.inputs)
      3 print(mesh_attr_op.outputs)

File c:\users\e092220\.venv\3.9.6\pyansys-latest\lib\site-packages\ansys\dpf\core\operators\mesh\mesh_get_attribute.py:74, in mesh_get_attribute.__init__(self, abstract_meshed_region, property_name, property_identifier, config, server)
     66 def __init__(
     67     self,
     68     abstract_meshed_region=None,
   (...)
     72     server=None,
     73 ):
---> 74     super().__init__(name="mesh::get_attribute", config=config, server=server)
     75     self._inputs = InputsMeshGetAttribute(self)
     76     self._outputs = OutputsMeshGetAttribute(self)

File c:\users\e092220\.venv\3.9.6\pyansys-latest\lib\site-packages\ansys\dpf\core\dpf_operator.py:120, in Operator.__init__(self, name, config, server)
    117     self._internal_obj = self._api.operator_new(self.name)
    119 if self._internal_obj is None:
--> 120     raise KeyError(
    121         f"The operator {self.name} doesn't exist in the registry. "
    122         f"Check its spelling in the documentation or verify its availability "
    123         f"in your Context (Entry/Premium) and in your loaded plugins."
    124     )
    126 self._spec = Specification(operator_name=self.name, server=self._server)
    127 # add dynamic inputs

KeyError: "The operator mesh::get_attribute doesn't exist in the registry. Check its spelling in the documentation or verify its availability in your Context (Entry/Premium) and in your loaded plugins."

On Windows, with ANSYS 2022R2 installed. Can you please explain what is going on here?

Paul Profizi

Hi @cvaero,

You are trying to use mesh.get_attribute operator on a DPF Server packaged with Ansys 2022R2.

Sadly, this operator and other "*get_attribute" operators are only available starting with the new DPF server 2023-2-pre1.

This operator is simply not available for this Ansys version.

We are working on setting a minimal required server version for operators in the documentation.

Of way of checking whether an operator is available is to use the operator documentation from the first PyDPF-Core release compatible with the 2022R2 Ansys version. If you check here, you can see it is ansys-dpf-core==0.5.0.

When looking in the corresponding operator documentation here, we can see that the "mesh::get_attribute" operator is not available.