AnsweredAssumed Answered

ArcMap Python Add In Extension does not execute

Question asked by geoid23 on Oct 12, 2016
Latest reply on Dec 6, 2016 by geoid23

ArcMap Desktop 10.2, Windows 7, Python 2.7.3


Attempting to set up a very basic add in extension for testing. I have used the Add In Wizard to establish the project folders/ files, run and then run the .esriaddin to install the add in.

This is intended to open a message box and print a message to the python immediate window upon opening the mxd but I get nothing. It doesn't error out. It just never kicks off. I can see the Add In under Customize in the mxd. 


Except for selecting the openDocument method I left all other inputs at the defaults. I've also tried this with the startup method and got the same non-result.  


Here is my script (indents not enforced):


import arcpy
import pythonaddins

class ExtensionClass1(object):
"""Implementation for TEST_addin.extension2 (Extension)"""
def __init__(self):
# For performance considerations, please remove all unused methods in this class.
self.enabled = True
def openDocument(self):
pythonaddins.MessageBox("blah blah blah TEST")
print "fake fake fake"


Any ideas here would be great. This is supposed to be the "easy" part as I haven't gotten into the complexities of my actual script that I'll be setting up at all. 




 Add ins are terrible to test. All testing must be done in the IDE as you are given no indication whatsoever what is wrong once you are working in ArcMap. I still have not really figured out all of the vagaries regarding why or why not something will not fire. For example, I have gotten the above script to run when I incorporate newDocument() above openDocument() with the same functional code, but if I then comment out newDocument it stops working. Nonsense. 


It comes down to this: if you can see the Add in but not the Extension (assuming its an extension) then something is wrong with your script. However, I now have a new script which runs fine directly from the ArcMap immediate window but does nothing through the Add in. Nonsense. I suppose I'll just keep randomly guessing until it happens to work.