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IndexError: list index out of range

JoanBiediger

I am new to Python programming and I am trying to see if a working directory is there and if not create it. I keep getting the following error IndexError: list index out of range. Not sure what I am doing wrong.
I would appreciate it if anyone can lend some assistance.

import string, sys, shutil, glob, os, arcpy  #print sys.argv  print arcpy.CheckOutExtension("Spatial") from arcpy.sa import * arcpy.env.overwriteOutput = True  #check to see if scratch directory exists: if os.path.isdir(sys.argv[1] + "/working")<> True:     arcpy.CreateArcInfoWorkspace_management(sys.argv[1], "working")      if os.path.isdir(sys.argv[1] + "/output")<> True:     arcpy.CreateArcInfoWorkspace_management(sys.argv[1], "output") arcpy.AddMessage ("Output workspace created")  arcpy.env.workspace = sys.argv[1]

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Accepted answers

curtvprice

what I really want to do is see if a folder exists in the same folder as the script and if
it doesn't then create the folder.

sys.argv[0] is the path of the script. I think this is what you're trying to do:

import sys import os import arcpy  # create a scratch folder in the same folder as the script Here = os.path.dirname(sys.argv[0]) if not arcpy.exists(os.path.join(Here,"working"):     arcpy.CreateArcInfoWorkspace_management(Here, "working")

All comments

MathewCoyle

I'd suspect, based on your code, that you only have one argument passing to your script. In that case you would want sys.argv[0]. In Python, as in most computer languages, counting starts at 0.

BruceNielsen

I'd suspect, based on your code, that you only have one argument passing to your script. In that case you would want sys.argv[0]. In Python, as in most computer languages, counting starts at 0.

sys.argv[0] should be the name of the script. sys.argv[1] would be the first parameter. This is different than GetParameterAsText.

Joan,

Unless you're going to be working with Arc/INFO coverages, you probably don't want to use CreateArcInfoWorkspace. Use os.mkdir to create a directory for storing shapefiles, or CreateFileGDB for a file geodatabase.

MathewCoyle

sys.argv[0] should be the name of the script. sys.argv[1] would be the first parameter. This is different than GetParameterAsText.

Joan,

Unless you're going to be working with Arc/INFO coverages, you probably don't want to use CreateArcInfoWorkspace. Use os.mkdir to create a directory for storing shapefiles, or CreateFileGDB for a file geodatabase.

Ah that's right. The only time I've used sys.argv I was doing processing using the script name as an input, that's probably how I got turned around.

DarrenWiens2

I keep getting the following error IndexError: list index out of range. Not sure what I am doing wrong.

Might sound silly, but the only thing I can think of is that you haven't entered a value for the parameter, sys.argv[1]. Have you (ie. when you run the script, do you indicate which folder you want?)?

Does this work? It should.

import arcpy, sys

arcpy.AddMessage(sys.argv[1])
print(sys.argv[1])

HollyTorpey_LSA_0-1738715572510.png

JoanBiediger

Hi Darren,

I think you are right, when I print the sys.argv[1] I am getting the folder and the name of the script when what I really want to do is see if a folder exists in the same folder as the script and if
it doesn't then create the folder.

Thanks for your response, I'll keep working on it.

curtvprice

what I really want to do is see if a folder exists in the same folder as the script and if
it doesn't then create the folder.

sys.argv[0] is the path of the script. I think this is what you're trying to do:

import sys import os import arcpy  # create a scratch folder in the same folder as the script Here = os.path.dirname(sys.argv[0]) if not arcpy.exists(os.path.join(Here,"working"):     arcpy.CreateArcInfoWorkspace_management(Here, "working")

JoanBiediger

Hi Curtis,

Thanks for your help, that did the trick.

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