I'm learning ArcPy and trying to export models to Python scripts to get a feel for it. I have a model that generalizes a land cover raster by reclassifying and using some other spatial analyst tools (boundary clean, region group, extract by attributes, and nibble). When I export my model each function is under arcpy.gp, e.g.:


And so on. I gather this means "Use the geoprocessing tool Reclassify from the Spatial Analyst extension" but I can't find any documentation for it. I can find arcpy.sa.Reclassify but not the arcpy.gp version. Does anyone know where to look?

  • 2
    If you are learning ArcPy be aware of the Copy As Python Snippet function in the Geoprocessing | Results window. It makes much easier to follow code than exporting models.
    – PolyGeo
    Feb 13, 2017 at 20:51
  • Thanks - that's a good heads up. Still leaves me wondering where to find documentation for the arcpy.gp functions, though. If that's a default from the export process, you'd think documentation would be easier to find. Feb 13, 2017 at 20:52
  • You'll want to use sa in your script. Read this: geonet.esri.com/thread/146373
    – ianbroad
    Feb 13, 2017 at 20:54
  • That's helpful. So I guess Esri doesn't provide any documentation for the arcpy.gp functions then, just adds a parameter for output. That's ... frustrating. Feb 13, 2017 at 20:56
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    The documentation is for the sa. You don't need documentation for gp since it'd be the exact same.
    – ianbroad
    Feb 13, 2017 at 20:59

1 Answer 1


Where I think you should expect to find the gp module to be documented is via the left hand panel of A quick tour of ArcPy.

However, as you can see it appears not to be documented.

enter image description here

You could submit an ArcGIS Idea to have this addressed for the ArcGIS Desktop architecture but, if it is still an issue for the ArcGIS Pro architecture then it may be better to make that your target.

  • 1
    Thanks for the thorough answer and the pointer to ArcGIS Idea. I don't have access to ArcGIS Pro at this time so I'll submit something for ArcGIS Desktop. Feb 13, 2017 at 23:03

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