Python dynamic library integration Bug

[ioncube]

From the DWSIM Application Data folder in $HOME, there is a .ini for DWSIM settings. I will extract it partially here:

[OctaveBridge]

OctavePath = 
OctaveProcessTimeout = 15
[PythonBridge]

PythonPath = 
PythonProcessTimeout = 1
[OSInfo]
Platform = Linux
Environment = 64

Application fails to launch if I do either of following case. It just show splash screen & dies

PythonPath =  /usr/lib/x86_64-linux-gnu/libpython3.10.so
OR
PythonPath =  /home/ukhan/Binaries/miniconda3.10/lib/libpython3.10.so

Should I use lower python version, if so which?

[Daniel Medeiros]

can you check errors.log and see if it recorded something?

[ioncube]

Error log

2023-11-28 18:38:01.3782 Extender Initialization
System.NullReferenceException: Object reference not set to an instance of an object
  at AutomaticTranslation.AutomaticTranslator.SetMainWindow (System.Windows.Forms.Form mainwindow) [0x0004c] in <dd9aae1bdf604acfa8a151e6ab29149d>:0 
  at DWSIM.FormMain.LoadExtenders () [0x00418] in <b757939e07c641f98bd9f6da26d95b13>:0 
2023-11-28 18:39:20.0186 Extender Initialization
System.NullReferenceException: Object reference not set to an instance of an object
  at AutomaticTranslation.AutomaticTranslator.SetMainWindow (System.Windows.Forms.Form mainwindow) [0x0004c] in <dd9aae1bdf604acfa8a151e6ab29149d>:0 
  at DWSIM.FormMain.LoadExtenders () [0x00418] in <b757939e07c641f98bd9f6da26d95b13>:0 
2023-11-30 20:05:49.8601 FOSSEE Flowsheets loading error
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
File name: 'Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
  at DWSIM.UI.MainForm+<>c.<InitializeComponent>b__12_11 () [0x00000] in <3e544c3da3d241d49c1fad9faed8c109>:0 
  at System.Threading.Tasks.Task`1[TResult].InnerInvoke () [0x00012] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
2023-11-30 20:05:49.8720 FOSSEE Flowsheets loading inner exception
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies.
File name: 'Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
  at DWSIM.UI.MainForm+<>c.<InitializeComponent>b__12_11 () [0x00000] in <3e544c3da3d241d49c1fad9faed8c109>:0 
  at System.Threading.Tasks.Task`1[TResult].InnerInvoke () [0x00012] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.Threading.Tasks.Task.Execute () [0x00000] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
2023-12-02 02:14:04.5520 Extender Initialization
System.NullReferenceException: Object reference not set to an instance of an object
  at AutomaticTranslation.AutomaticTranslator.SetMainWindow (System.Windows.Forms.Form mainwindow) [0x0004c] in <dd9aae1bdf604acfa8a151e6ab29149d>:0 
  at DWSIM.FormMain.LoadExtenders () [0x00418] in <b757939e07c641f98bd9f6da26d95b13>:0 
2023-12-02 12:32:45.0267 Python Library Path set to /usr/lib/x86_64-linux-gnu/libpython3.10.so.1.0
2023-12-07 10:53:10.1697 Extender Initialization
System.NullReferenceException: Object reference not set to an instance of an object
  at AutomaticTranslation.AutomaticTranslator.SetMainWindow (System.Windows.Forms.Form mainwindow) [0x0004c] in <dd9aae1bdf604acfa8a151e6ab29149d>:0 
  at DWSIM.FormMain.LoadExtenders () [0x00418] in <b757939e07c641f98bd9f6da26d95b13>:0 
2023-12-07 10:54:23.6588 Extender Initialization
System.NullReferenceException: Object reference not set to an instance of an object
  at AutomaticTranslation.AutomaticTranslator.SetMainWindow (System.Windows.Forms.Form mainwindow) [0x0004c] in <dd9aae1bdf604acfa8a151e6ab29149d>:0 
  at DWSIM.FormMain.LoadExtenders () [0x00418] in <b757939e07c641f98bd9f6da26d95b13>:0 

There is no error but IPython returns results ok but Python.Net doesn't run

import math as m

def ro():
    return 2*m.exp(2)


print (ro())

[12/7/2023 11:10:56 AM] 14.7781121979
[12/7/2023 11:11:02 AM] Running script 'Script1'...
[12/7/2023 11:11:02 AM] Error running script: No module named 'math'

[Daniel Medeiros]

remove the Automatic Translation files from the extenders folder, they are not needed on Linux.

[ioncube]

Thanks for replying. But it isnt the solution to python problem. I think this integration should be more smoother in Linux platforms. However my problem is referenced before as well : https://sourceforge.net/p/dwsim/discussion/mac_newui/thread/fe96433bcb/

[Daniel Medeiros]

did you remove the files and it is still not working?

[ioncube]

Dear friend please help me out. This is not working.
This folder is now completely empty: /usr/local/lib/dwsim/extenders

[Daniel Medeiros]

are you trying to start the classic ui version on linux? it is not supported anymore

[ioncube]

No I am trying new UI
Further findings while searching other forums
In the DWSIM deb there are these files available

/usr/local/lib/dwsim$ ls -k -s | grep Python.Run
   16 Python.Runtime.deps.json
  396 Python.Runtime.dll
    4 Python.Runtime.dll.config
  180 Python.Runtime.pdb

But these file also available when you install pythonnet via pip

~/Binaries/miniconda3.10/lib/python3.10/site-packages/pythonnet/runtime$ ls -k -s | grep Python.Run
 12 Python.Runtime.deps.json
424 Python.Runtime.dll
192 Python.Runtime.pdb
184 Python.Runtime.xml

The files have different sizes to what is packaged by default?
Additionally the contents of Python.Runtime.dll.config indicate that these dlls were made using Py v3.7

[Daniel Medeiros]

what happens if you remove the ones in dwsim's directory?