How to parallelize functions within arcpy tools?

uasdev — Wed, 28 Feb 2024 22:22:47 GMT

Hi all,

I am unable to use parallel processing in a custom made python toolbox (.pyt). I have scoured the web and have not been able to find a solution. My tool iterates through a list of files, but I attached a test toolbox that follows the same structure.

How do I get this tool to run the num_list in parallel? Below is the .py file snippet.

Thanks in advance.

```

import arcpy

from multiprocessing import Pool

class SquareTool(object):

def __init__(self):

"""Define the tool (tool name is the name of the class)."""

self.label = "Hello World"

self.description = ""

self.canRunInBackground = False

def getParameterInfo(self):

"""Define parameter definitions"""

params = None

return params

def isLicensed(self):

"""Set whether tool is licensed to execute."""

return True

def updateParameters(self, parameters):

"""Modify the values and properties of parameters before internal

validation is performed. This method is called whenever a parameter

has been changed."""

return

def updateMessages(self, parameters):

"""Modify the messages created by internal validation for each tool

parameter. This method is called after internal validation."""

return

def square(self, num):

"""Modify the messages created by internal validation for each tool

parameter. This method is called after internal validation."""

squareResult = num * num

arcpy.AddMessage(squareResult)

return squareResult

def execute(self, parameters, messages):

"""The source code of the tool."""

num_list = [0,1,2,3,4,5]

pool = Pool()

results = pool.map(self.square, num_list)

arcpy.AddMessage(results)

return

def postExecute(self, parameters):

"""This method takes place after outputs are processed and

added to the display."""

return

```

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How to parallelize functions within arcpy tools?