topic Re: ArcPy Scripting Help in Python Questions

ArcPy Scripting Help

TaylorBoles1 — Tue, 06 Dec 2022 15:35:46 GMT

Hello,

I am trying to create a custom tool to use in ArcPro that takes:

1) Input value--the feature class I want to work with

2) Input value--the name of the resulting output feature class from selection

3) Input value--the year in my data set that I want selected and the records copied into a new feature class

I am having trouble with the last part of my script:

import arcpy # Setting some variables inputfc = arcpy.GetParameterAsText(0) outputfc = arcpy.GetParameterAsText(1) year_value = arcpy.GetParameter(2) where_clause = 'SURVEY_YEAR = {0}'.format(year_value) arcpy.Select_analysis(inputfc, outputfc, where_clause)

I get an execute error and it says that my parameters are not valid. I am not sure what is wrong--I am also newish to ArcPy which is why I am struggling with this one.

Thanks for your help!

Edit: here's a screenshot of the error message

Re: ArcPy Scripting Help

JohannesLindner — Tue, 06 Dec 2022 15:27:44 GMT

Markdown doesn't work here. To format code:

Can you post a screenshot of the error message? That way, we can try to backtrack to where your script fails.

Does your inputfc really have a field called SURVEY_YEAR, and is that field really an integer field?

Re: ArcPy Scripting Help

TaylorBoles1 — Tue, 06 Dec 2022 15:39:03 GMT

Thank you. I changed some things around to make it easier to read/work with. Also, yes, the inputfc (the input feature chosen that I am working with) does have a field called SURVEY_YEAR, and that field contains short-numeric int values.

Re: ArcPy Scripting Help

DanPatterson — Tue, 06 Dec 2022 16:20:27 GMT

Where are the parameters coming from?

Are you using a custom toolbox?

A quick tour of creating tools with Python—ArcGIS Pro | Documentation

I would suggest using it since you can associate your parameters in the dialog with those in the script easier and visually

Re: ArcPy Scripting Help

Brian_Wilson — Tue, 06 Dec 2022 17:49:44 GMT

Put in a line to test if it can find the input file, after line 5, perhaps

if not arcpy.Exists(inputfc): exit(-1)

The next thing I would try is to hard code values and see what happens, testing only the function with three known good inputs, like for example,

import arcpy # Setting some variables #inputfc = arcpy.GetParameterAsText(0) #outputfc = arcpy.GetParameterAsText(1) #year_value = arcpy.GetParameter(2) #where_clause = 'SURVEY_YEAR = {0}'.format(year_value) inputfc = "C:\\some\\file\\path\\survey.shp" outputfc = "C:\\Temp\\output.shp" where_clause = "1=1" arcpy.Select_analysis(inputfc, outputfc, where_clause)

Then you might be able to narrow it down removing those changes one at a time to see what it's griping about.