I am working on a tool in Python toolbox, it has two parameters.
If I run this tool from toolbox, it is working fine.
If I add this tool to model builder and run the model, it not working as expected.
Problem is that if I update Input Value 1, then Input Value 2 is updated as expected. But if I update Input Value 2, then the value of Input Value 1 is not updated as expected.
Here is the code:
# -*- coding: utf-8 -*-
import arcpy
class Toolbox(object):
def __init__(self):
"""Define the toolbox (the name of the toolbox is the name of the
.pyt file)."""
self.label = "Toolbox"
self.alias = ""
# List of tool classes associated with this toolbox
self.tools = [Tool]
class Tool(object):
def __init__(self):
"""Define the tool (tool name is the name of the class)."""
self.label = "Tool"
self.description = ""
self.canRunInBackground = False
def getParameterInfo(self):
"""Define parameter definitions"""
params = []
param1 = arcpy.Parameter(
displayName="Input Value 1",
name="param1",
datatype="GPDouble", parameterType="Required", direction="Input")
param1.value = 1.0
param2 = arcpy.Parameter(
displayName="Input Value 2",
name="param2",
datatype="GPDouble", parameterType="Optional", direction="Input")
params = [param1, param2]
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."""
if (parameters[0].altered and not parameters[0].hasBeenValidated):
parameters[1].value = parameters[0].value * 4
if (parameters[1].altered and not parameters[1].hasBeenValidated):
parameters[0].value = parameters[1].value / 4
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 execute(self, parameters, messages):
"""The source code of the tool."""
return
Please help me to fix this issue.
