Regarding node functions throwing exceptions when applied on nodes.

[rajnishnationfirst]

Hi Colleagues,

I am trying to read data_types , values etc for some nodes using getter and setter function on nodes of NODE TYPE VARIABLES.

I am getting the data type and values when applied on some nodes, but facing errors and getting exceptions when applied for some other nodes.

I am using node.get_data_type_as_variant_type() , node.get_data_type() , node.get_data_value() ,etc all other functions of nodes , and when i apply on some nodes i am getting issue and exceptions are raised as added below .

Is there any other way to get the DATA TYPE of the TAG other than node.get_data_type_as_variant_type() ?

It would be great if anyone from the group can help me out on the above issues.

Thanks Rajnish Vishwakarma

[swamper123]

What TAG do you mean? Is that the NodeId (it looks like that)?

If you got a Node, you can read out the DataType attribute, which contains "Identifier" which is a number. What you may looking for is: https://github.com/FreeOpcUa/python-opcua/blob/13b4e1249e06a3d3feef09afd04139eb774207bc/opcua/common/node.py#L88

That number represents a Datatype e.g. Double = 11.

Is that what you are looking for?