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

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06-02-2019 07:48 AM
BIJOYGAYEN
New Contributor II

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)



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1 Solution

Accepted Solutions
LukeWebb
Occasional Contributor III

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

View solution in original post

41 Replies
JoeBorgione
MVP Emeritus

I suggest you split each of your geoprocessing tasks  into thier own function; you can then try/except each of them and get a more precise error.  Call each of them from main():

def geoprocess1():
  try:
     each of your tasks...
     print('Sucess: geoprocess1 complete!')
  except Exception as err:
      print('Error: unable to complete geoprocess1')
      print(err)
def geoprocess2():
  try:
     each of your tasks...
     print('Sucess: geoprocess2 complete!')
  except Exception as err:
      print('Error: unable to complete geoprocess2')
      print(err)
def geoprocess3():
  try:
     each of your tasks...
     print('Sucess: geoprocess3 complete!')
  except Exception as err:
      print('Error: unable to complete geoprocess3')
      print(err)
def main():
  geoprocess1()
  geoprocess2()
  geoprocess3()

if __name__ == "__main__":
  main()
That should just about do it....
BIJOYGAYEN
New Contributor II

Thank you for your tricks is working well. Now I want to reduce my code because initially, I write this code for three land_type (Land_10, Land_20, Land_30) but I have 10 land_type under the three category ("AAA","BBB","CCC"). If you have any suggestion regarding this issue then, please suggest me. Next, I want to use the multiprocessing, multithreading function for the whole code because I have a large volume data, it takes much more time in one process.

One more thing the line number 126 to 160 I want to define a function add to the main function. Then, the main function should be processed their next function( geoprocesse1,2,3) automatically based on their categories "AAA","BBB","CCC". How to do this?

Please look at this matter.

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 saved in different folder and their individual name

      #------------------First we write category "AAA" and their individual land type--------------------------------------#
        category="AAA"
        file_name=filename
        base_path = r"F:\\DB_test_data\\VAR4\\"

        def geoprocess1(base_path,category,file_name):
            try:
             land_use='LAND_10'
             outdir = os.path.join(base_path,category,land_use)
             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 ("Successfully created the directory" )

             ras_name = os.path.join(outdir,("{0}_{1}{2}_{3}".format(category,file_name,land_use,".txt")))
             fields = ['grid_code', '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 " )
             print('Sucess: geoprocess1 complete!')
            except Exception as err:
              print('Error: unable to complete geoprocess1')
              print(err)
        def geoprocess2(base_path,category,file_name):
            try:
             land_use='LAND_20'
             outdir = os.path.join(base_path,category,land_use)
             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 ("Successfully created the directory" )

             ras_name = os.path.join(outdir,("{0}_{1}{2}_{3}".format(category,file_name,land_use,".txt")))
             fields = ['grid_code', '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 " )
             print('Sucess: geoprocess2 complete!')
            except Exception as err:
              print('Error: unable to complete geoprocess2')
              print(err)
        def geoprocess3(base_path,category,file_name):
          try:
             land_use='LAND_30'
             outdir = os.path.join(base_path,category,land_use)
             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 ("Successfully created the directory" )

             ras_name = os.path.join(outdir,("{0}_{1}{2}_{3}".format(category,file_name,land_use,".txt")))
             fields = ['grid_code', '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 " )
             print('Sucess: geoprocess3 complete!')
          except Exception as err:
              print('Error: unable to complete geoprocess3')
              print(err)
        def main(base_path,category,file_name):
          geoprocess1(base_path,category,file_name)
          geoprocess2(base_path,category,file_name)
          geoprocess3(base_path,category,file_name)

        if __name__ == "__main__":
          main(base_path,category,file_name)





        print "Code is OK"
    except:
     print "Error in Code"




print arcpy.GetMessages()
print 'finished run: %s\n\n' % (datetime.datetime.now() - start)
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0 Kudos
BIJOYGAYEN
New Contributor II

Please help me, anyone, to resolve this issue.

0 Kudos
JoeBorgione
MVP Emeritus

'll see if I can help you out:

I write this code for three land_type (Land_10, Land_20, Land_30) but I have 10 land_type under the three category ("AAA","BBB","CCC").

The approach I would take for this is to nest do loops. Psuedo code:

categoryList = ['aaa', 'bbb', 'ccc']
landtypeList = [1,2,3,4,5,6,7,8,9,10]

for category in categoryList:
   for type in landtypeList:
      '''first iteration is on aaa-1
         second iteration is on aaa-2
         third iteration is on aaa-3
         ...
         21st iteration is ccc-1 etc...
         perform youre geoprocessing steps 
         in each iteration'''‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I want to use the multiprocessing, multithreading function for the whole code because I have a large volume data, it takes much more time in one process.

Sorry, can't help you here, perhaps Joshua Bixby‌ can weigh in....

One more thing the line number 126 to 160 I want to define a function add to the main function. Then, the main function should be processed their next function( geoprocesse1,2,3) automatically based on their categories "AAA","BBB","CCC". 

I'm not sure I follow what you are after. You can slice up all of your processing into separate defs().  That can get kind of tricky though as scoping variables can become problematic; a variable set in on def() won't be available to another unless it's global, and I shy way from global variables.  Looking briefly at your code above, I think you can handle it in the nested loop suggestion.

That should just about do it....
0 Kudos
BIJOYGAYEN
New Contributor II

Thank you, sir, for your given comment.

But I cannot clearly understand your suggestion can you elaborate me.

0 Kudos
JoeBorgione
MVP Emeritus

It sounds to me like you have three different categories of data, and each of those categories has 10 different land types to process.  That's 30 iterations of processing: AAA-1 get's processed the same as BBB-1 and CCC-1, correct?  And hence, AAA-10, BBB-10 and CCC-10, get the same treatment, along with all the others respectively in-between. Your code is fairly complex, and I don't have enough time to fully study and understand each of your processes.

Your lines 126 through 160 seem like just another geoprocessing def() to me, but I may be over-simplifying it.  

That should just about do it....
0 Kudos
BIJOYGAYEN
New Contributor II

Yes, sir, you are correct and you are going in the correct direction. Please, sir, help me to resolve this issue. How do I communicate with Joshua Bixby?

0 Kudos
BIJOYGAYEN
New Contributor II

Joe Borgione are you working on my code?

0 Kudos
JoeBorgione
MVP Emeritus

Not really; I have a day job....

That should just about do it....