code not working when executed from flask app

[ThomasDC]

Hi all!

To start I have to say i am new to Python...
But i mannaged to do nice things allready. But now have a problem that i just dont know how to fix:

when i execute this code it works:

debug.py:

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import main_debug     main_debug.omnic_ready() print("test successful")

but when i execute the 'main_debug.omnic_ready() from app.py it does not work:

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from flask import Flask, render_template, request, Response, url_for, flash, get_flashed_messages, redirect   import main_debug app = Flask(__name__) app.secret_key = "Secret_key"     @app.route('/FTIR_status', methods=['POST', 'GET']) def FTIR_status():     main_debug.omnic_ready()     return render_template("index_wbase.html", graph=False)     # Get the batch name from the form data     if __name__ == "__main__":     app.run(debug=True, port=5005)

I have been able to execute functions from the app.py flask application, but never this one.. I will show the rest of the code so you see what is hapening.
but i guess it has something to do with the permissions of flask and the DDE server that is used:

main_debug.py:

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from Omnic_adrem_debug import Omnic     def omnic_ready():     global omnic     omnic = Omnic()     try:         omnic.initialize_omnic()         print("Omnic ready for analyzing")     except Exception as e:         print("Something went wrong:", e)

and here is the Omnic_adrem_debug.py:

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from OmnicDDE import OmnicDDE   MyOmnic = OmnicDDE()   class Omnic:     def __init__(self):  # , gantry         try:             MyOmnic.GetExperimentalSettings()         except NameError:             print("OmnicDDE object not instantiated")       def initialize_omnic(self):         self.OMNIC_ready = False         if not self.OMNIC_ready:               print("Get Omnic ready")             MyOmnic.GetExperimentalSettings()             print("Set scan numbers to 10")             MyOmnic.SetNumScans(10)             print("Clear Window")             MyOmnic.ClearWindow()             print("collect background")             MyOmnic.CollectBackground("Background")             self.OMNIC_ready = True             print("Omnic Is ready for sampling")

and finally here is the OmnicDDE.py code:

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# For Python 3.XX, use pywin32 (pip install --upgrade pywin32) import win32ui import dde import time from OmnicExperimentalSettings import ExperimentalSettings     class OmnicDDE():     Application = "Omnic"     Thread = "Spectra"       def __init__(self):         self.server = dde.CreateServer()         self.server.Create("MyOmnic_server")         self.MyOmnicConversation = dde.CreateConversation(self.server)         self.MyOmnicConversation.ConnectTo(self.Application, self.Thread)         print(time.asctime() + "\t" + "Connection With Omnic Established")           # Minimize the Omnic window         self.MyOmnicConversation.Exec('[MinimizeWindow]')       def CollectBackground(self, title=""):         # title = kwargs.get('title','')         cmd = '[Invoke CollectBackground """' + title + '""" Auto Polling]'         self.MyOmnicConversation.Exec(cmd)         print(time.asctime() + "\t" + "Collecting Background ...")         CurrentWindow = self.MyOmnicConversation.Request('Window Title')         self.MyOmnicConversation.Exec('[MaximizeWindow """' + CurrentWindow + '"""]')         self.MyOmnicConversation.Exec('[MinimizeWindow]')         MS = self.MyOmnicConversation.Request('MenuStatus CollectBackground')         while MS == "Disabled":             time.sleep(1)             MS = self.MyOmnicConversation.Request('MenuStatus CollectBackground')         self.MyOmnicConversation.Exec('[MinimizeWindow]')         print(time.asctime() + "\t" + "Background Collection Finished")         # If the user does not specify the title, he probably doesn't want to save it         if title == "":             time.sleep(0.5)             self.MyOmnicConversation.Exec("[DeleteSelectedSpectra]")

So I only have problems when the code gets executed from the app.py (flask web interface) and not from the debug.py.
The error that i get is:

1	dde.error: Request failed

Thanks a lot for the help
(what I allready tried, is opening powershell as admin and starting the app.py from powershell but the problem stays the same)

[ThomasDC]

hmm, no response yet..
Is there some more information that I could provide to help me find the sollution?
like I said, I think, it has something to do with the flask app and DDE server rights..