topic Re: How to add file types to a multiple data type arcpy parameter in a Python toolbox? in Python Questions

How to add file types to a multiple data type arcpy parameter in a Python toolbox?

calin_gi — Wed, 22 Dec 2021 06:56:41 GMT

In my custom Python toolbox, I would like to create a similar input parameter as the "Input KML File" in the "KML To Layer" tool, i.e. allowing a layer to be selected by dropdown and by opening it from a file dialog (see screenshot below).

I can almost make this work by using the following code:

param0 = arcpy.Parameter( displayName="Input KML/KMZ File", name="input_kml", datatype=["GPKMLLayer","DEFile"], parameterType="Required", direction="Input", )

The problem is that I now get the choose any file type instead of just kml and kmz files.

If I add the following code, I get an error:

param0.filter.list = ["kml", "kmz"]

How can I make this work?

Re: How to add file types to a multiple data type arcpy parameter in a Python toolbox?

2Quiker — Wed, 22 Dec 2021 20:03:55 GMT

maybe multivalue= True,

aram0 = arcpy.Parameter( displayName="Input KML/KMZ File", name="input_kml", datatype=["GPKMLLayer","DEFile"], parameterType="Required", multivalue= True, direction="Input", )

Re: How to add file types to a multiple data type arcpy parameter in a Python toolbox?

Luke_Pinner — Wed, 22 Dec 2021 21:37:02 GMT

If you just use datatype="GPKMLLayer", the tool will accept a KML layer in the map from the dropdown, or a .kml/kmz file from the file dialog. You'll be able to select a non .kml/kmz file in the file dialog, but the tool will show a validation error:

param0 = arcpy.Parameter( displayName="Input KML/KMZ File", name="input_kml", datatype="GPKMLLayer", parameterType="Required", direction="Input", )

Re: How to add file types to a multiple data type arcpy parameter in a Python toolbox?

calin_gi — Mon, 03 Jan 2022 08:16:41 GMT

I am just wondering how Esri did it for the KML to layer tool though...

Re: How to add file types to a multiple data type arcpy parameter in a Python toolbox?

Luke_Pinner — Mon, 03 Jan 2022 21:06:37 GMT

I'm not sure it's possible with a Python Toolbox, perhaps a bug report or an ArcGIS Pro Ideas feature request about supporting filters for composite datatypes (e.g. parameter.filters[n].list = ["kml", "kmz"]) like is possible for value table parameters. In a PYT, a parameter with a composite datatype does have a .filters property, but all the elements (one for each datatype) are None, not a filter object).

It is possible using a script tool instead of a python toolbox though...