Run script tool in python script

Question

I have a tool I made with a python script called 'myTool' in a toolbox called 'myBox', alias 'box'. I need to run this tool multiple times with the output of one run being one of the inputs of the next run. I would like to write a python script that would run the tool a few times. I have a script called myScript.py:

import arcpy

myTool_box('input_1.shp', 'base_case.shp', 'output_1.shp') # creates output_1.shp
myTool_box('input_2.shp', 'output_1.shp', 'output_2.shp') # creates output_2.shp
myTool_box('input_3.shp', 'output_2.shp', 'final_output.shp') # creates final_output.shp

When I run execfile(myScript.py) from the python window, I get the error:

Runtime error 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Projects\myScript.py", line 3, in <module>
    arcpy.myTool_box('input_1.shp', 'base_case.shp', 'output_1.shp') # creates output_1.shp
AttributeError: 'module' object has no attribute 'myTool_box'

I assume this means that my_tool or my custom toolbox isn't on arcpy's path or I need to import the toolbox to the script, but I haven't found any information on how to tell the script where the tool resides. What am I missing here?

Answer 1

Take a look at Adding toolboxes in Python and ImportToolbox

Import the toolbox, giving it an alias (myToolbox), then run your tool, referencing the tool name NameOfTool and the alias myToolBox separated by an underscore -> arcpy.NameOfTool_myToolbox()

arcpy.ImportToolbox(r"C:\Projects\MyToolbox.tbx", "myToolbox")

arcpy.NameOfTool_myToolbox('input_1.shp', 'base_case.shp', 'output_1.shp') # creates output_1.shp
arcpy.NameOfTool_myToolbox('input_2.shp', 'output_1.shp', 'output_2.shp') # creates output_2.shp
arcpy.NameOfTool_myToolbox('input_3.shp', 'output_2.shp', 'final_output.shp') # creates final_output.shp