Middle section of the code, I separate the attribute value in a different category ("AAA","BBB","CCC") and every category have Ten land-use types, initially, I set Three land use type (LAND_10, LAND_20, LAND_30) for test code. Now I used the update cursor for different land-use type(LAND_10, LAND_20, LAND_30) , and saved the text file to there corresponding Land use folders(Like, Land_10 ....Land_30) under the "AAA" folder. similarly, this function I will use for categories "BBB","CCC" . Initially, I write this code for category "AAA" but I want to use this function for category "BBB","CCC" by defining a function(uncheck all define function), but is not working. Below is my code please check it. First of all, I want to reduce my code (Because I have 10 land type initially I write three) and the whole function I want to use as a defined function for a different category. Another thing is Multiprocessing, Multithreading I want to use this function for the code because of initially my code takes much more time for one processes. In my case how to use the multiprocessing function. please look at this matter and give me a suggestion to manipulate this code. import datetime start = datetime . datetime . now ( ) print 'start run: %s\n' % ( start ) import arcpy , os , sys , csv , errno from arcpy import env from arcpy . sa import * import datetime import re import glob import itertools arcpy . env . overwriteOutput = True import multiprocessing as mp print ( "Number of processors: " , mp . cpu_count ( ) ) cellsize = "F:\\DB_test_data\\TEST_RAY\\TEST1\\MOD02HKM_A2017001_0530_NDVI_AA.img" d1 = "F:\\DB_test_data\\VAR2\\cldmask\\tt" CLDMASK = glob . glob ( d1 + os . sep + "*.Aerosol_Cldmask_Land_Ocean-Aerosol_Cldmask_Land_Ocean.tif" ) CLDMASK . sort ( ) if CLDMASK is None : print 'Could not open the CLDMASK raster files' sys . exit ( 1 ) else : print 'The CLDMASK raster files was opened successfully' #print CLDMASK d2 = "F:\\DB_test_data\\TEST_RAY\\TEST1" NDVI = glob . glob ( d2 + os . sep + "*A2017001_0530_NDVI_AA.img" ) NDVI . sort ( ) if NDVI is None : print 'Could not open the NDVI raster files' sys . exit ( 1 ) else : print 'The NDVI raster files was opened successfully' #print NDVI d3 = "F:\\DB_test_data\\VAR2\\IDL\\MOD02HKM\\TEST" BAND1 = glob . glob ( d3 + os . sep + "*A2017001_0530_006_BAND_1.img" ) BAND1 . sort ( ) if BAND1 is None : print 'Could not open the BAND1 raster files' sys . exit ( 1 ) else : print 'The BAND1 raster files was opened successfully' #print BAND1 d4 = "F:\\DB_test_data\\VAR2\\IDL\\MOD02HKM\\TEST" BAND2 = glob . glob ( d4 + os . sep + "*A2017001_0530_006_BAND_2.img" ) BAND2 . sort ( ) if BAND2 is None : print 'Could not open the BAND2 raster files' sys . exit ( 1 ) else : print 'The BAND2 raster files was opened successfully' #print BAND2 d4 = "F:\\DB_test_data\\VAR2\\IDL\\MOD09\\TEST" BAND3 = glob . glob ( d4 + os . sep + "*A2017001_0530_006_BAND_3.img" ) BAND3 . sort ( ) if BAND3 is None : print 'Could not open the BAND3 raster files' sys . exit ( 1 ) else : print 'The BAND3 raster files was opened successfully' #print BAND3 d5 = "F:\\DB_test_data\\VAR2\\IDL\\MOD02HKM\\TEST" BAND4 = glob . glob ( d5 + os . sep + "*A2017001_0530_006_BAND_4.img" ) BAND4 . sort ( ) if BAND4 is None : print 'Could not open the BAND4 raster files' sys . exit ( 1 ) else : print 'The BAND4 raster files was opened successfully' #print BAND4 d6 = r "F:\\DB_test_data\\VAR2\\MOD04_l2" AOD = glob . glob ( d6 + os . sep + "*Corrected_Optical_Depth_Land_2-Corrected_Optical_Depth_Land.tif" ) AOD . sort ( ) if AOD is None : print 'Could not open the AOD raster files' sys . exit ( 1 ) else : print 'The AOD raster files was opened successfully' Scale_factor = float ( 0.0010000000474974513 ) add_offset = float ( 0.0 ) Fill_value = float ( - 9999 ) outdir = "F:\\DB_test_data\\VAR4\\" for a , b , c , d , e , f , g in zip ( CLDMASK , NDVI , BAND1 , BAND2 , BAND3 , BAND4 , AOD ) : print ( "processing:" + a ) arcpy . AddMessage ( "processing:{}" . format ( b . split ( '\\' ) [ 4 ] [ 9 : 30 ] ) ) name = c . split ( "\\" ) filename = name [ 6 ] [ 9 : 33 ] print filename arcpy . AddMessage ( "processing:{}" . format ( d . split ( '\\' ) [ 6 ] [ 9 : 33 ] ) ) arcpy . AddMessage ( "processing:{}" . format ( e . split ( '\\' ) [ 6 ] [ 9 : 30 ] ) ) arcpy . AddMessage ( "processing:{}" . format ( f . split ( '\\' ) [ 6 ] [ 9 : 33 ] ) ) print ( "processing:" + g ) ####################################################################### setnull = arcpy . gp . SetNull_sa ( g , g , "in_memory/dat" , "\"Value\" = -9999" ) ras = arcpy . Raster ( setnull ) Data = ( ras - add_offset ) * Scale_factor da = Con ( ( Data >= 0.0 ) & ( Data 0.1 ) , 1 ) # Process: Extract by Cloud_Mask tempEnvironment0 = arcpy . env . cellSize arcpy . env . cellSize = "MAXOF" ndvi_msk = arcpy . gp . ExtractByMask_sa ( b , a ) Band1_mask = arcpy . gp . ExtractByMask_sa ( c , a ) Band2_mask = arcpy . gp . ExtractByMask_sa ( d , a ) Band3_mask = arcpy . gp . ExtractByMask_sa ( e , a ) Band4_mask = arcpy . gp . ExtractByMask_sa ( f , a ) arcpy . env . cellSize = tempEnvironment0 # Process: Extract by Mask using AOD less than 0.1 value tempEnvironment0 = arcpy . env . cellSize arcpy . env . cellSize = cellsize ndvi_msk1 = arcpy . gp . ExtractByMask_sa ( ndvi_msk , da ) Band1_mask1 = arcpy . gp . ExtractByMask_sa ( Band1_mask , da ) Band2_mask2 = arcpy . gp . ExtractByMask_sa ( Band2_mask , da ) Band3_mask3 = arcpy . gp . ExtractByMask_sa ( Band2_mask , da ) Band4_mask4 = arcpy . gp . ExtractByMask_sa ( Band2_mask , da ) arcpy . env . cellSize = tempEnvironment0 try : # Raster to point field = "VALUE" Point = arcpy . RasterToPoint_conversion ( ndvi_msk1 , "in_memory/fileroot" , field ) shape = arcpy . sa . ExtractMultiValuesToPoints ( Point , [ [ ndvi_msk1 , "NDVI" ] , [ Band1_mask1 , "Band1" ] , [ Band2_mask2 , "Band2" ] , [ Band3_mask3 , "Band3" ] , [ Band4_mask4 , "Band4" ] ] , "NONE" ) #Add Two Fields Name and Name2 [ arcpy . AddField_management ( shape , field_name , "TEXT" , field_length = 50 ) for field_name in [ "Name" , "Name2" ] ] arcpy . AddMessage ( "Successfully Added NAME fields " ) fieldss = [ 'Band1' , 'Name' ] with arcpy . da . UpdateCursor ( shape , fieldss ) as cursor : for row in cursor : if ( row [ 0 ] > 0.02 and row [ 0 ] 0.06 ) : row [ 1 ] = 'AAA' print ( "processing1:" "{0:.8f}, {1}" . format ( row [ 0 ] , row [ 1 ] ) ) elif ( row [ 0 ] >= 0.06 and row [ 0 ] 0.09 ) : row [ 1 ] = 'BBB' # print ("processing1:""{0:.8f}, {1}".format(row[0], row[1])) elif ( row [ 0 ] >= 0.09 ) : row [ 1 ] = 'CCC' else : row [ 1 ] = 'NA' # Update the cursor with the updated list cursor . updateRow ( row ) # Process: Select Layer By Attribute for separate the catagories "AAA","BBB,"CCC" arcpy . MakeFeatureLayer_management ( shape , "lyr1" ) AAA = arcpy . SelectLayerByAttribute_management ( "lyr1" , "NEW_SELECTION" , "\"Name\" = 'AAA'" ) print "Successfully Process : Select Layer By Attribute for AAA " arcpy . MakeFeatureLayer_management ( shape , "lyr2" ) BBB = arcpy . SelectLayerByAttribute_management ( "lyr2" , "NEW_SELECTION" , "\"Name\" = 'BBB'" ) print "Successfully Process : Select Layer By Attribute for BBB " arcpy . MakeFeatureLayer_management ( shape , "lyr3" ) CCC = arcpy . SelectLayerByAttribute_management ( "lyr3" , "NEW_SELECTION" , "\"Name\" = 'CCC'" ) print "Successfully Process : Select Layer By Attribute for CCC " # Writing tables for categories("AAA","BBB,"CCC") and individual category have three Land type # that will be save in different folder and their individual name #------------------First we write category "AAA" and their indiviual land type--------------------------------------# category = "AAA" file_name = filename base_path = r "F:\\DB_test_data\\VAR4\\" #def TableTotext(Input_Data,base_path,category,file_name): #def Land_10(): land_use = 'LAND_10' outdir = os . path . join ( base_path , category , land_use ) if not os . path . exists ( outdir ) : print ( '\nCreating new output directory!\n' + outdir + '\n' ) os . makedirs ( outdir ) else : print ( "Directory already exists" ) ras_name = os . path . join ( outdir , ( "{0}_{1}{2}_{3}" . format ( category , file_name , land_use , ".txt" ) ) ) fields = [ 'NDVI' , 'Band1' , 'Band2' , 'Band3' , 'Name' , "Name2" ] with open ( ras_name , 'wb' ) as txtfile : arcpy . AddMessage ( "fields Writing For landuse 10" ) txtfile . write ( " {0} {1} {2} {3} {4} {5}\n" . format ( fields [ 0 ] , fields [ 1 ] , fields [ 2 ] , fields [ 3 ] , fields [ 4 ] , fields [ 5 ] ) ) with arcpy . da . UpdateCursor ( AAA , fields ) as cursor : for row in cursor : if ( row [ 0 ] > 0.10 and row [ 0 ] 0.20 ) : row [ 5 ] = 'landuse_10' print ( "processing_A:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . close ( ) print ( "Successfully save the landuse 10 " ) #return Land_10 #def Land_20(): land_use = 'LAND_20' outdir = os . path . join ( base_path , category , land_use ) if not os . path . exists ( outdir ) : print ( '\nCreating new output directory!\n' + outdir + '\n' ) os . makedirs ( outdir ) else : print ( "Directory already exists" ) ras_name = os . path . join ( outdir , ( "{0}_{1}{2}_{3}" . format ( category , file_name , land_use , ".txt" ) ) ) fields = [ 'NDVI' , 'Band1' , 'Band2' , 'Band3' , 'Name' , "Name2" ] with open ( ras_name , 'wb' ) as txtfile : arcpy . AddMessage ( "fields Writing For landuse 20" ) txtfile . write ( " {0} {1} {2} {3} {4} {5}\n" . format ( fields [ 0 ] , fields [ 1 ] , fields [ 2 ] , fields [ 3 ] , fields [ 4 ] , fields [ 5 ] ) ) with arcpy . da . UpdateCursor ( AAA , fields ) as cursor : for row in cursor : if ( row [ 0 ] >= 0.20 and row [ 0 ] 0.50 ) : row [ 5 ] = 'landuse_20' print ( "processing_B:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . close ( ) print ( "Successfully save the landuse 20 " ) #return Land_20 #def Land_30(): land_use = 'LAND_30' outdir = os . path . join ( base_path , category , land_use ) if not os . path . exists ( outdir ) : print ( '\nCreating new output directory!\n' + outdir + '\n' ) os . makedirs ( outdir ) else : print ( "Directory already exists" ) ras_name = os . path . join ( outdir , ( "{0}_{1}{2}_{3}" . format ( category , file_name , land_use , ".txt" ) ) ) fields = [ 'NDVI' , 'Band1' , 'Band2' , 'Band3' , 'Name' , "Name2" ] with open ( ras_name , 'wb' ) as txtfile : arcpy . AddMessage ( "fields Writing For landuse 30" ) txtfile . write ( " {0} {1} {2} {3} {4} {5}\n" . format ( fields [ 0 ] , fields [ 1 ] , fields [ 2 ] , fields [ 3 ] , fields [ 4 ] , fields [ 5 ] ) ) with arcpy . da . UpdateCursor ( AAA , fields ) as cursor : for row in cursor : if ( row [ 0 ] >= 0.50 ) : row [ 5 ] = 'landuse_30' print ( "processing_C:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . close ( ) print ( "Successfully save the landuse 30 " ) #return LAND_30 #------------------Second we write category "BBB" and their indiviual land type--------------------------------------# print "Code is OK" except : print "Error in Code" print arcpy . GetMessages ( ) print 'finished run: %s\n\n' % ( datetime . datetime . now ( ) - start )

I did notice the issue, you are not actually using the result of the comparison. For example instead of: result = minCheckType ( row [ 0 ] , minValue ) row [ 5 ] = land_use print ( "processing_A:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( " {0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) You should have done: result = minCheckType ( row [ 0 ] , minValue ) if result == True: row [ 5 ] = land_use print ( "processing_A:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( " {0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) Sadly did not spot this issue at first and am hopelessly addicted to python, so I rewrote your script here to show you how to use functions a bit more, there may be a bug as i didnt test it : __author__ = 'Beast2' import os from operator import * import time import datetime import arcpy import sys def create_output_directory ( outdir ) : if not os . path . exists ( outdir ) : try : print ( '\nCreating new output directory!\n' + outdir + '\n' ) os . makedirs ( outdir ) except OSError : print ( "Creation of the directory failed" ) else : print ( "Directory Already Exists" ) return True def make_comparisons ( value , minCheckType , minValue , maxCheckType , maxValue ) : if minCheckType == None and maxCheckType == None : #We have no comparison! result = "No comparison to make" elif minCheckType == None : #query with just max being checked result = maxCheckType ( value , maxValue ) elif maxCheckType == None : #Query just checking minimums result = minCheckType ( value , minValue ) else : result1 = maxCheckType ( value , maxValue ) result2 = minCheckType ( value , minValue ) if result1 == True and result2 == True : result = True else : result = False return result def main ( file_name , base_path , categories , land_uses ) : print "Processing to file name: %s" % file_name print "Saving results to: %s" % base_path print "Processing %s categories" % len ( categories ) for category in categories : print "Processing Category: %s" % category [ 0 ] print "Category Input Data: %s" % category [ 1 ] for land_use in land_uses : output_directory_path = os . path . join ( base_path , category [ 0 ] , land_use [ 0 ] ) print "Processing Land Use: %s" % land_use [ 0 ] create_output_directory ( output_directory_path ) ras_name = os . path . join ( output_directory_path , ( "{0}_{1}{2}_{3}" . format ( category [ 0 ] , file_name , land_use [ 0 ] , ".txt" ) ) ) fields = [ 'grid_code' , 'Band1' , 'Band2' , 'Band3' , 'Name' , "Name2" ] with open ( ras_name , 'wb' ) as txtfile : arcpy . AddMessage ( "fields Writing For:{0}" . format ( land_use [ 0 ] ) ) txtfile . write ( " {0} {1} {2} {3} {4} {5}\n" . format ( fields [ 0 ] , fields [ 1 ] , fields [ 2 ] , fields [ 3 ] , fields [ 4 ] , fields [ 5 ] ) ) with arcpy . da . UpdateCursor ( category [ 1 ] , fields ) as cursor : for row in cursor : row_test_value = row [ 0 ] #Check if the row value, is within the land use category if make_comparisons ( row_test_value , land_use [ 1 ] , land_use [ 2 ] , land_use [ 3 ] , land_use [ 4 ] ) == True : row [ 5 ] = land_use [ 0 ] print ( "processing:" "{0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . write ( " {0:.8f} {1:.8f} {2:.8f} {3:.8f} {4} {5}\n" . format ( row [ 0 ] , row [ 1 ] , row [ 2 ] , row [ 3 ] , row [ 4 ] , row [ 5 ] ) ) txtfile . close ( ) print ( "Successfully save the:{0}" . format ( land_use [ 0 ] ) ) if __name__ == '__main__' : try : start_time = time . time ( ) #Categories we will process category_1 = [ 'OOO' , 'input_data' ] category_2 = [ 'FFF' , 'input_data' ] category_3 = [ 'ddd' , 'input_data' ] categories = [ category_1 , category_2 , category_3 ] #Land Use category information land_10 = [ 'LAND_10' , gt , 0.1 , lt , 0.2 ] land_20 = [ 'LAND_20' , ge , 0.2 , lt , 0.5 ] land_30 = [ 'LAND_30' , ge , 0.5 , None , None ] land_uses = [ land_10 , land_20 , land_30 ] #Other parameters base_path = 'base_path' file_name = 'file_name' main ( file_name , base_path , categories , land_uses ) print "serial processing took:" , time . time ( ) - start_time print "serial processing is OK" except : print "Error in serial processing" print arcpy . GetMessages ( ) print 'finished run: %s\n\n' % ( datetime . datetime . now ( ) - start_time ) py

Write ArcPy cursor results to a text file in different folders with a different name based on cursor condition. Define function is not working.Multiprocessing