How to add a string to output filename if an optional arcpy.env.mask is used?

AliceDeschamps1 — Sun, 12 Dec 2021 16:01:42 GMT

In the script below the processing mask is optional. I am trying to identify if a mask was used or not in the output filename. What I have below is not working as it should, as it stands it adds "Mask" to the filename weather or not a processing mask is used.

The behavior I need is as follows:
If no processing mask is used => add nothing to outputRaster filename.
If processing mask is used => add a string ex.Mask to the outputRasterfilename.

Obviously my code needs tweaking (red)! Any Ideas on how to fix this?

# Import arcpy modules
import arcpy
from arcpy import env
import sys, string, os
arcpy.env.overwriteOutput = True

# Script arguments
inRaster = arcpy.GetParameterAsText(0)
No_STDEV = arcpy.GetParameterAsText(1)
arcpy.env.mask = arcpy.GetParameterAsText(2)# User sets Geoprocessing/Environments/Workspace #(mask is optional)
if not arcpy.Exists(os.path.join((os.path.split(arcpy.env.workspace))[0], 'results')):
   arcpy.CreateFolder_management((os.path.split(arcpy.env.workspace))[0], 'results')
if arcpy.env.mask == "":
   proMask= ""
else:
   proMask= "Mask"
outputRaster= os.path.join(os.path.join((os.path.split(arcpy.env.workspace))[0], 'results'), (os.path.splitext(os.path.basename(inRaster))[0] + "_" + str(proMask) + str(No_STDEV) + "STDEV_" + "enh.tif"))

# Messages to test string concatenation of output file name and folder creation        
arcpy.AddMessage("Name of file to enhance: \n" + inRaster)
arcpy.AddMessage("Name and location of your enhanced image is: \n" + outputRaster)
arcpy.AddMessage("Number of Standard Deviations on the right side to trim histogram: " + No_STDEV)
arcpy.AddMessage("Are you using a processing mask? " + proMask)

Re: How to add a string to output filename if an optional arcpy.env.mask is used?

AndrewChapkowski — Sat, 11 Dec 2021 06:35:15 GMT

Try using None instead of empty quotes ("")

if arcpy.env.mask ==  None:
   proMask= ""
else:
   proMask= "Mask"

Re: How to add a string to output filename if an optional arcpy.env.mask is used?

AliceDeschamps1 — Mon, 11 Jul 2011 17:32:32 GMT

That worked like a charm, I knew it could not be that difficult.

Thanks for your help, greatly appreciated!

Alice

topic How to add a string to output filename if an optional arcpy.env.mask is used? in Python Questions

How to add a string to output filename if an optional arcpy.env.mask is used?

Re: How to add a string to output filename if an optional arcpy.env.mask is used?

Re: How to add a string to output filename if an optional arcpy.env.mask is used?