topic Re: Cancel event in Python Gp tools with arcpy in Python Questions

Cancel event in Python Gp tools with arcpy

DanielIsenegger — Thu, 25 Apr 2013 08:51:48 GMT

In GP-tools written in C# (ArcObjects) we can listen for the Cancel-event and react on that. I wonder if there is anything similar in Python GP-tools applying arcpy. I googled that issue and the only thing I found was the Cancel-method on the Result-Object (so that you can ask the state of the result of a GP-tool, i.e. if it was canceled). I'm aware that you can cancel GP-tools running in the background in the Result Window, but this Cancel-event is catched by the system and therefore the developer or the GP-tool cannot react on that.
Further I tried to catch the arcpy.ExecuteError within the canceled Python GP-script with the following statement, but no exception was catched:
        try:
            for workspace in workspace_list:

               counter += 1

                msg = str.format("{0}.workspace: {1} ", counter, workspace)
                whole_msg += msg

                arcpy.AddMessage(msg)

        except arcpy.ExecuteError:
            msg = str.format("arcpy.ExecuteError: {0}", arcpy.GetMessages())
            arcpy.AddError(msg)

        # Return any other type of error
        except:
            msg = str.format("Non-tool error occurred: {0}", arcpy.GetMessages())
            arcpy.AddError(msg)

Thank You in advance!

Re: Cancel event in Python Gp tools with arcpy

ZibusisoNcube — Tue, 07 May 2013 16:54:40 GMT

In GP-tools written in C# (ArcObjects) we can listen for the Cancel-event and react on that. I wonder if there is anything similar in Python GP-tools applying arcpy. I googled that issue and the only thing I found was the Cancel-method on the Result-Object (so that you can ask the state of the result of a GP-tool, i.e. if it was canceled). I'm aware that you can cancel GP-tools running in the background in the Result Window, but this Cancel-event is catched by the system and therefore the developer or the GP-tool cannot react on that.
Further I tried to catch the arcpy.ExecuteError within the canceled Python GP-script with the following statement, but no exception was catched:
        try:
            for workspace in workspace_list:

               counter += 1

                msg = str.format("{0}.workspace: {1} ", counter, workspace)
                whole_msg += msg

                arcpy.AddMessage(msg)

        except arcpy.ExecuteError:
            msg = str.format("arcpy.ExecuteError: {0}", arcpy.GetMessages())
            arcpy.AddError(msg)

        # Return any other type of error
        except:
            msg = str.format("Non-tool error occurred: {0}", arcpy.GetMessages())
            arcpy.AddError(msg)

Thank You in advance!

Did you ever get a solution to your problem. If ou did kindly assist by posting it here. I am in a similar dilemma

Thank YOU...in advance 🙂

Re: Cancel event in Python Gp tools with arcpy

DanielIsenegger — Wed, 22 May 2013 08:29:06 GMT

Hi
I posted this question also on other forums like gis.stackexchange.com, but no, unfortunately till now, no replies and no solutions or workarounds. It seems that this problem is not causing much troubles to GP-Tools users.

Regards,
Dani