I am developing a toolbar by the pythonaddins, in regards to define all the input raster files. I wrote the follwoing lines so the user enters how many data he wants to read and accordingly, an input box will be displayed

# Import
import arcpy, os,sys, pythonaddins

Folder_Location = arcpy.GetParameterAsText(0) # please select a folder to save the project files
ScN=arcpy.GetParameterAsText(1) # please write the number of scenarious to be compared
for i in range (1,int(ScN)+1):
    MessageD='Select the raster layer of flood depth for scenario No   '#+ str(i)
    Depth_rstr[i]= pythonaddins.OpenDialog(MessageD,False,r'C:\','Select')

unfortunatly, the OpenDialog window just display folders without allowing me to double click it to select any file

enter image description here

hoowever when I write the same lines in python window, it works well

enter image description here

I notices when I operate this puthonaddins- button, I got this error in the python window

TypeError: GPToolDialog() takes at most 1 argument (2 given)

Could any one advice me, how to solve this problem? I want this could to select files.

1 Answer 1


I cannot see this coding pattern working because you are trying to use the pythonaddins module, which is designed for Python AddIns, within a Python Script Tool.

The pythonaddins module documentation explicitly says right at its start:

The pythonaddins module can only be used within a Python add-in. It cannot be used in stand-alone scripts or geoprocessing script tools.

I think you should remove the pythonaddins module from your code and configure another parameter on the tool dialog of your Python Script tool instead.

  • I use these scripts within The pythonaddins. I have developed a toolbar, and script in the ToolBox the buttons in the toolbar are just operate the toolbox script using pythonaddins.GPToolDialog(r'D:\.......) Sep 22, 2016 at 10:38
  • Are you saying that you have not included a code snippet that works up to where you are stuck? If that is the case then please review meta.gis.stackexchange.com/questions/4312/… and revise your question.
    – PolyGeo
    Sep 22, 2016 at 10:41
  • Well, I will have a look< thank you hope I didn;t bother you Sep 22, 2016 at 10:53
  • Could you please tell me what parameters in Python Script that read files' paths within a loop instead of pythonaddins.OpenDialog. Thanks Sep 23, 2016 at 18:11
  • I suspect that you should be using a multi-value on that parameter.
    – PolyGeo
    Sep 23, 2016 at 19:48

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