topic Re: Python Api in Robot Structural Analysis Forum

Python Api

cool.stuff — Tue, 21 May 2019 08:51:01 GMT

Good morning!!!

When I try to define a support in Python with the follwoing code,

sup = labels.Create(rp.IRobotLabelType.I_LT_SUPPORT, 'sup')
sup_dt=rp.IRobotNodeSupportData
sup_dt = sup.Data
sup_dt.UX = 1
sup_dt.UY = 1
sup_dt.UZ = 1
sup_dt.RX = 1
sup_dt.RY = 1
sup_dt.RZ = 1
labels.Store(sup)

I got the error:

File "<ipython-input-56-8cf91e21e0e8>", line 1, in <module>
sup_dt = sup.Data

AttributeError: '__ComObject' object has no attribute 'Data'

Can someone help me?

Thanks

Re: Python Api

JacquesGaudin — Tue, 12 May 2020 15:07:10 GMT

You can try casting the object returned by ``labels.Create`` to ``IRobotLabel`` to make sure it implements the Label interface. I do that often since I am running the code on CPython through PythonNet.

sup = IRobotLabel(labels.Create(rp.IRobotLabelType.I_LT_SUPPORT, 'sup') sup_dt = IRobotNodeSupportData(sup.Data)

That should solve the issue. 🤞

Re: Python Api

cool.stuff — Wed, 16 Sep 2020 07:44:45 GMT

Many thanks for your answer and sorry for my late one!!!!

I tried what you said but stil get an syntax error:

import clr
import math
import sys
import csv

clr.AddReference('C:\Program Files\Autodesk\Autodesk Robot Structural Analysis Professional 2019\System\Exe\Interop.RobotOM.dll')

import RobotOM as rbt

from System import Environment
from RobotOM import *
from System import Object

robapp=rbt.RobotApplicationClass()
struc=robapp.Project.Structure
node=struc.Nodes
bar=struc.Bars
labels=struc.Labels
stress=struc.Results.Bars.Stresses
force=struc.Results.Bars.Forces

sup = IRobotLabel(labels.Create(robapp.IRobotLabelType.I_LT_SUPPORT, 'createdSupport')
supData = IRobotNodeSupportData(sup.Data)
supData.UX = 1
supData.UY = 1
supData.UZ = 1
supData.RX = 1
supData.RY = 1
supData.RZ = 1
labels.Store(sup)

Any aideas why?

Re: Python Api

JacquesGaudin — Wed, 16 Sep 2020 08:41:25 GMT

Please include the full error message including line number. It makes it much easier to spot the mistake. It may just be a typo so please copy exactly the code you are trying to run.

Re: Python Api

cool.stuff — Wed, 16 Sep 2020 08:57:16 GMT

Many thanks for your answer!!

My full code (the is like this one):

import clr
import math
import sys
import csv

clr.AddReference('C:\Program Files\Autodesk\Autodesk Robot Structural Analysis Professional 2019\System\Exe\Interop.RobotOM.dll')

import RobotOM as rbt

from System import Environment
from RobotOM import *
from System import Object

robapp=rbt.RobotApplicationClass()
struc=robapp.Project.Structure
node=struc.Nodes
bar=struc.Bars
labels=struc.Labels
stress=struc.Results.Bars.Stresses
force=struc.Results.Bars.Forces

The error:

runfile('G:/WIP/RSAP Python/RSAP_Test.py', wdir='G:/WIP/RSAP Python')
Traceback (most recent call last):

File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\lib\site-packages\IPython\core\interactiveshell.py", line 2963, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)

File "<ipython-input-2-727407a95006>", line 1, in <module>
runfile('G:/WIP/RSAP Python/RSAP_Test.py', wdir='G:/WIP/RSAP Python')

File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 827, in runfile
execfile(filename, namespace)

File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Anaconda3_64\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 110, in execfile
exec(compile(f.read(), filename, 'exec'), namespace)

File "G:/WIP/RSAP Python/RSAP_Test.py", line 45
supData = IRobotNodeSupportData(sup.Data)
^
SyntaxError: invalid syntax

This is what I get..

Thanks! 🙂

Re: Python Api

JacquesGaudin — Wed, 16 Sep 2020 08:58:53 GMT

There is a bracket missing at the end of

sup = IRobotLabel(labels.Create(robapp.IRobotLabelType.I_LT_SUPPORT, 'createdSupport')

Re: Python Api

JacquesGaudin — Wed, 16 Sep 2020 08:59:25 GMT

There is a closing bracket missing at the end of:

sup = IRobotLabel(labels.Create(robapp.IRobotLabelType.I_LT_SUPPORT, 'createdSupport')

Re: Python Api

cool.stuff — Wed, 16 Sep 2020 09:02:04 GMT

Many thanks!!! 🙂

What a silly mistake -.-

But now I get the following error:

sup = IRobotLabel(labels.Create(robapp.IRobotLabelType.I_LT_SUPPORT, 'createdSupport'))

AttributeError: 'RobotApplicationClass' object has no attribute 'IRobotLabelType'

I've changed to sup = IRobotLabel(labels.Create(robapp.IRobotLabel.I_LT_SUPPORT, 'createdSupport')) but stil get the same..

Re: Python Api

JacquesGaudin — Wed, 16 Sep 2020 09:12:14 GMT

In fairness, the error was mine in the original answer 😉

IRobotLabelType is in the RobotOM module so it should be:

sup = IRobotLabel(labels.Create(RobotOM.IRobotLabelType.I_LT_SUPPORT, 'createdSupport'))

or since you import * from RobotOM:

sup = IRobotLabel(labels.Create(IRobotLabelType.I_LT_SUPPORT, 'createdSupport'))

Note if you want to look at the list of names defined in an object or module, you can use:

dir(myObject)

dir(myModule)

It helps locating things as the API documentation is sometimes incomplete.

Re: Python Api

cool.stuff — Wed, 16 Sep 2020 09:15:33 GMT

Works like a charm!!! :))

Many thanks for solving and for teaching a few useful tricks 🙂

You're the man!!! 🙂

Re: Python Api

ArunNDinesh — Thu, 04 May 2023 06:44:23 GMT

@cool.stuff Can you please share the final code which is working? I just budding some python integration with RSA. The code in the thread is not working for me.

import clr import math import sys import csv clr.AddReference('C:\Program Files\Autodesk\Robot Structural Analysis Professional 2023\Exe\Interop.RobotOM.dll') import RobotOM as rbt from System import Environment from RobotOM import * from System import Object robapp=rbt.RobotApplicationClass() struc=robapp.Project.Structure RobApp = RobotApplicationClass() # Connect to Robot Structural Analysis RobProj = RobApp.Project # To Get current project RobStruc = RobProj.Structure # To Get current model node=RobStruc.Nodes bar=RobStruc.Bars labels=RobStruc.Labels stress=RobStruc.Results.Bars.Stresses force=RobStruc.Results.Bars.Forces sup = IRobotLabel(labels.Create(RobotOM.IRobotLabelType.I_LT_SUPPORT, 'Sup')) supData = IRobotNodeSupportData(sup.Data) supData.UX = 1 supData.UY = 1 supData.UZ = 1 supData.RX = 1 supData.RY = 1 supData.RZ = 1 labels.Store(sup)

Re: Python Api

JacquesGaudin — Thu, 04 May 2023 09:10:07 GMT

@ArunNDinesh

Please post the error message, we need to know how it's not working to help you.

Re: Python Api

ArunNDinesh — Thu, 04 May 2023 09:18:28 GMT

Unhandled Exception: System.NotSupportedException: Cannot create uninitialized instances of types requiring managed activation. at System.Runtime.Serialization.FormatterServices.nativeGetUninitializedObject(RuntimeType type) at Python.Runtime.ClassObject.tp_new_impl(BorrowedReference tp, BorrowedReference args, BorrowedReference kw) at Python.Runtime.NativeCall.Call_3(IntPtr fp, BorrowedReference a1, BorrowedReference a2, BorrowedReference a3) at Python.Runtime.MetaType.tp_call(BorrowedReference tp, BorrowedReference args, BorrowedReference kw)

@JacquesGaudinThank you for the response. I'm just learning the python integration with RSA, So I'm just using the limited threads and curious to see how python is calling the objects in RSA. Thanks for your time in advance 🙂

Re: Python Api

JacquesGaudin — Thu, 04 May 2023 13:33:41 GMT

@ArunNDinesh

This is rather unusual! Do you know which line triggers the error?

Re: Python Api

ArunNDinesh — Fri, 05 May 2023 04:17:09 GMT

I do have issues in these many lines. I don't know what is the reason and got stuck!!

@JacquesGaudin Please help if you know . . .

Re: Python Api

JacquesGaudin — Fri, 05 May 2023 08:41:05 GMT

@ArunNDinesh

I need to understand which line causes the error. Could you add some print statements in your code to establish where it stops?

The messages saying the import cannot be resolved look like warnings emitted by your IDE, I wouldn't worry to much about them for now.

Re: Python Api

ArunNDinesh — Mon, 08 May 2023 09:44:24 GMT

@JacquesGaudin I already copied the print statements. It seems the issue starts from Line 6. Is this working for you?😕

I am able to open ROBOT application using

import subprocess

file=subprocess.Popen('C:\\Program Files\\Autodesk\\Robot Structural Analysis Professional 2023\\Exe\\robot.exe') and there is no issue. But unable to integrate other functions with ROBOT

Re: Python Api

JacquesGaudin — Tue, 09 May 2023 10:09:19 GMT

What I mean by print statements in the code is to add some lines in the like of ```print('Robot import successful')``` after each line of your script.

For example:

import clr print('clr imported') clr.Addreference(<your path>) print('Reference to Robot added') import RobotOM print('Robot imported') ...

This will tell you on which line the program stops.

Re: Python Api

ArunNDinesh — Tue, 09 May 2023 11:46:28 GMT

Hi @JacquesGaudin Thank you for the clarification. Added the print statement and it seems like line 19 is having the issue.

import clr print('clr imported') import math print('math imported') import sys print('sys imported') import csv print('csv imported') clr.AddReference('C:\Program Files\Autodesk\Robot Structural Analysis Professional 2023\Exe\Interop.RobotOM.dll') print('Reference to Robot added') import RobotOM as rbt print('Robot imported 1') from System import Environment print('imported 2') from RobotOM import * print('imported 3') from System import Object print('imported 4') robapp=rbt.RobotApplicationClass() print('imported 5') struc=robapp.Project.Structure print('imported 6') RobApp = RobotApplicationClass() # Connect to Robot Structural Analysis print('imported 7') RobProj = RobApp.Project # To Get current project print('imported 8') RobStruc = RobProj.Structure # To Get current model print('imported 9') node=RobStruc.Nodes bar=RobStruc.Bars labels=RobStruc.Labels stress=RobStruc.Results.Bars.Stresses force=RobStruc.Results.Bars.Forces sup = IRobotLabel(labels.Create(RobotOM.IRobotLabelType.I_LT_SUPPORT, 'Sup')) supData = IRobotNodeSupportData(sup.Data) supData.UX = 1 supData.UY = 1 supData.UZ = 1 supData.RX = 1 supData.RY = 1 supData.RZ = 1 labels.Store(sup)

Re: Python Api

JacquesGaudin — Tue, 09 May 2023 17:00:08 GMT

Interesting! I usually get the RobotApplication from:

RobApp = RobotApplication()

rather than RobotApplicationClass(). Does that solve the issue?