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asked on
Python script error - Assertion error
Hello,
I am trying to use the code I got from here:
https://www.experts-exchange.com/questions/23068228/Modify-Python-Script-for-more-automation.html
I have changed directory locations and the lines:
expTemplate = 'CON(ISNULL(%s), %s, %s * -1)'
to
expTemplate = '(%s, + (%s * 10))'
and
numSuffix = LnumDir[-2:] # last 2 chars
idSuffix = LnumDir[-4:] # last 4 chars
to
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
I get the following error:
C:\Documents and Settings\u4cncmgj>c:\pytho
\u4cncmgj\My Documents\code\to_create_r
Traceback (most recent call last):
File "C:\Documents and Settings\u4cncmgj\My Documents\code\to_create_r
nLC16_with3digits.py", line 51, in ?
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "C:\Documents and Settings\u4cncmgj\My Documents\code\to_create_r
nLC16_with3digits.py", line 40, in allLandcoverDonutAndIdSuff
assert os.path.isdir(DnumDir)
AssertionError
Here is the code I used:
# Multi_Output_Map_Algebra_s
# Description:
# Runs an expression built with the Map Algebra language.
# Requirements: None
import arcgisscripting
import glob
import os
gisworkDir = 'C:\GISWORK\Hibernacula\EU
def log(s):
f = open("C:/tester.txt","w")
f.write(s)
f.close()
def allLandcoverDonutAndIdSuff
'''Generates all tuples (landcover, donut, idSuffix) from the gisworkDir.'''
##log("1\n")
# Prepare the path to the donuts.
donutDir = os.path.join(gisworkDir, 'Donut')
assert os.path.isdir(donutDir)
##log("2\n")
# Iterate through sequence of top-level landcover subdirectories.
mask = os.path.normpath(os.path.j
##log(mask)
for LDir in glob.glob(mask): # full paths to LandcoverA, LandcoverB, etc.
subdir = os.path.basename(LDir)
##log("3\n")
# Iterate through all numbered landcover subdirs inside.
mask2 = os.path.join(LDir, '*')
for LnumDir in glob.glob(mask2):
# Separate the counter part, the idSuffix and construct
# the related donut numbered directory name.
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
DnumDir = os.path.normpath(
os.path.join(donutDir, 'DONUT_' + numSuffix))
assert os.path.isdir(DnumDir)
##log("4")
# Generate another output tuple.
yield (LnumDir, DnumDir, idSuffix)
# Create the Geoprocessor object
gp = arcgisscripting.create()
expTemplate = '(%s, + (%s * 10))'
log("\n===== Output below: ====\n")
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
# Construct the expression and the output directory name.
outDir = os.path.join(gisworkDir, 'landcoverprep', 'Results', idSuffix)
log("\n" + outDir)
InExpression = expTemplate % (donut, landcover)
log(" " + InExpression)
# Check out Spatial Analyst extension license
gp.CheckOutExtension("Spat
# Process: MapAlgebra
gp.SingleOutputMapAlgebra_
log("Msg: " + gp.GetMessages())
Please advise,
Thanks,
MJ
I am trying to use the code I got from here:
https://www.experts-exchange.com/questions/23068228/Modify-Python-Script-for-more-automation.html
I have changed directory locations and the lines:
expTemplate = 'CON(ISNULL(%s), %s, %s * -1)'
to
expTemplate = '(%s, + (%s * 10))'
and
numSuffix = LnumDir[-2:] # last 2 chars
idSuffix = LnumDir[-4:] # last 4 chars
to
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
I get the following error:
C:\Documents and Settings\u4cncmgj>c:\pytho
\u4cncmgj\My Documents\code\to_create_r
Traceback (most recent call last):
File "C:\Documents and Settings\u4cncmgj\My Documents\code\to_create_r
nLC16_with3digits.py", line 51, in ?
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "C:\Documents and Settings\u4cncmgj\My Documents\code\to_create_r
nLC16_with3digits.py", line 40, in allLandcoverDonutAndIdSuff
assert os.path.isdir(DnumDir)
AssertionError
Here is the code I used:
# Multi_Output_Map_Algebra_s
# Description:
# Runs an expression built with the Map Algebra language.
# Requirements: None
import arcgisscripting
import glob
import os
gisworkDir = 'C:\GISWORK\Hibernacula\EU
def log(s):
f = open("C:/tester.txt","w")
f.write(s)
f.close()
def allLandcoverDonutAndIdSuff
'''Generates all tuples (landcover, donut, idSuffix) from the gisworkDir.'''
##log("1\n")
# Prepare the path to the donuts.
donutDir = os.path.join(gisworkDir, 'Donut')
assert os.path.isdir(donutDir)
##log("2\n")
# Iterate through sequence of top-level landcover subdirectories.
mask = os.path.normpath(os.path.j
##log(mask)
for LDir in glob.glob(mask): # full paths to LandcoverA, LandcoverB, etc.
subdir = os.path.basename(LDir)
##log("3\n")
# Iterate through all numbered landcover subdirs inside.
mask2 = os.path.join(LDir, '*')
for LnumDir in glob.glob(mask2):
# Separate the counter part, the idSuffix and construct
# the related donut numbered directory name.
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
DnumDir = os.path.normpath(
os.path.join(donutDir, 'DONUT_' + numSuffix))
assert os.path.isdir(DnumDir)
##log("4")
# Generate another output tuple.
yield (LnumDir, DnumDir, idSuffix)
# Create the Geoprocessor object
gp = arcgisscripting.create()
expTemplate = '(%s, + (%s * 10))'
log("\n===== Output below: ====\n")
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
# Construct the expression and the output directory name.
outDir = os.path.join(gisworkDir, 'landcoverprep', 'Results', idSuffix)
log("\n" + outDir)
InExpression = expTemplate % (donut, landcover)
log(" " + InExpression)
# Check out Spatial Analyst extension license
gp.CheckOutExtension("Spat
# Process: MapAlgebra
gp.SingleOutputMapAlgebra_
log("Msg: " + gp.GetMessages())
Please advise,
Thanks,
MJ
# Multi_Output_Map_Algebra_sample.py
# Description:
# Runs an expression built with the Map Algebra language.
# Requirements: None
import arcgisscripting
import glob
import os
gisworkDir = 'c:\Giswork'
def log(s):
f = open("C:/tester.txt","w")
f.write(s)
f.close()
def allLandcoverDonutAndIdSuffix(gisworkDir):
'''Generates all tuples (landcover, donut, idSuffix) from the gisworkDir.'''
##log("1\n")
# Prepare the path to the donuts.
donutDir = os.path.join(gisworkDir, 'landcoverprep', 'Donut')
assert os.path.isdir(donutDir)
##log("2\n")
# Iterate through sequence of top-level landcover subdirectories.
mask = os.path.normpath(os.path.join(gisworkDir, 'Landcoverprep\landcover*'))
##log(mask)
for LDir in glob.glob(mask): # full paths to LandcoverA, LandcoverB, etc.
subdir = os.path.basename(LDir)
##log("3\n")
# Iterate through all numbered landcover subdirs inside.
mask2 = os.path.join(LDir, '*')
for LnumDir in glob.glob(mask2):
# Separate the counter part, the idSuffix and construct
# the related donut numbered directory name.
numSuffix = LnumDir[-2:] # last 2 chars
idSuffix = LnumDir[-4:] # last 4 chars
DnumDir = os.path.normpath(
os.path.join(donutDir, 'DONUT_' + numSuffix))
assert os.path.isdir(DnumDir)
##log("4")
# Generate another output tuple.
yield (LnumDir, DnumDir, idSuffix)
# Create the Geoprocessor object
gp = arcgisscripting.create()
expTemplate = 'CON(ISNULL(%s), %s, %s * -1)'
log("\n===== Output below: ====\n")
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuffix(gisworkDir):
# Construct the expression and the output directory name.
outDir = os.path.join(gisworkDir, 'landcoverprep', 'Results', idSuffix)
log("\n" + outDir)
InExpression = expTemplate % (donut, landcover, landcover)
log(" " + InExpression)
# Check out Spatial Analyst extension license
gp.CheckOutExtension("Spatial")
# Process: MapAlgebra
gp.SingleOutputMapAlgebra_sa(InExpression, outDir)
log("Msg: " + gp.GetMessages())
Last Comment
ASKER
mish33:
Thanks, However:
There are directories named:
Donut
LandcoverI
LandcoverL
Do the sub directories name matter as long as the have the three digit number at the end?
Any other possible problems?
Thanks,
MJ
Thanks, However:
There are directories named:
Donut
LandcoverI
LandcoverL
Do the sub directories name matter as long as the have the three digit number at the end?
Any other possible problems?
Thanks,
MJ
Donut should be exactly Donut, not Donut001 not Donut.001 etc.
Line
gisworkDir = 'C:\GISWORK\Hibernacula\EU
is wrong, it should be either
gisworkDir = r'C:\GISWORK\Hibernacula\E
or
gisworkDir = 'C:\\GISWORK\\Hibernacula\
which mean the same.
Line
gisworkDir = 'C:\GISWORK\Hibernacula\EU
is wrong, it should be either
gisworkDir = r'C:\GISWORK\Hibernacula\E
or
gisworkDir = 'C:\\GISWORK\\Hibernacula\
which mean the same.
ASKER
Hello,
My files are as you suggest and I am now getting the same error.
Please advise,
MJ
My files are as you suggest and I am now getting the same error.
Please advise,
MJ
All backslashes in pathes should be either
(a) escaped with \ (like 'c:\\path')
or (b) made raw with r'' (like r'c:\path')
or (c) converted to forward slashes (like 'c:/path)
Also you access Donut_NNNN !?
Do you still that assert statement?
What is your dir structure?
(a) escaped with \ (like 'c:\\path')
or (b) made raw with r'' (like r'c:\path')
or (c) converted to forward slashes (like 'c:/path)
Also you access Donut_NNNN !?
Do you still that assert statement?
What is your dir structure?
ASKER
mish33:
Hello,
1. All backslashes in paths have been converted to forward slashes.
2. You said "Also you access Donut_NNNN!? Do you still assert that last statement?" I am unsure of what this means, but yes I am still trying to use Donut.
3. Directory structure:
C:\Giswork\landcoverprep\D
C:\Giswork\landcoverprep\L
C:\Giswork\landcoverprep\R
Donut has folders named "donut_001 - donut_407, donut_431, donut_435, donut_440, donut_447, donut_448
LandcoverI has the same numbering (i.e. LandcoverI_001 - 407, 431, 435, 440, 447)
Please advise,
MJ
Hello,
1. All backslashes in paths have been converted to forward slashes.
2. You said "Also you access Donut_NNNN!? Do you still assert that last statement?" I am unsure of what this means, but yes I am still trying to use Donut.
3. Directory structure:
C:\Giswork\landcoverprep\D
C:\Giswork\landcoverprep\L
C:\Giswork\landcoverprep\R
Donut has folders named "donut_001 - donut_407, donut_431, donut_435, donut_440, donut_447, donut_448
LandcoverI has the same numbering (i.e. LandcoverI_001 - 407, 431, 435, 440, 447)
Please advise,
MJ
ok, please post latest code as snippet (updates to use last 3 chars for number) and the error (I guess line # is different - if not and it's the same as in the begining, fine)
Your numbered code has right workdir but [-2:]. Your inline code has different workdir but [-3:]!?
Your numbered code has right workdir but [-2:]. Your inline code has different workdir but [-3:]!?
ASKER
mish33"
With the snippet below I get the following error:
C:\Documents and Settings\user>c:\python24\
Traceback (most recent call last):
File "c:\new2.py", line 51, in ?
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "c:\new2.py", line 40, in allLandcoverDonutAndIdSuff
assert os.path.isdir(DnumDir)
AssertionError
All Landcover and Donut directories have three digits (donut_xxx & landcover*_xxx) and will not be mixed with the old directories with only two appended digits. How come changing the -2, -4 to :
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 3 chars
did not solve the problem?
Thanks,
MJ
With the snippet below I get the following error:
C:\Documents and Settings\user>c:\python24\
Traceback (most recent call last):
File "c:\new2.py", line 51, in ?
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "c:\new2.py", line 40, in allLandcoverDonutAndIdSuff
assert os.path.isdir(DnumDir)
AssertionError
All Landcover and Donut directories have three digits (donut_xxx & landcover*_xxx) and will not be mixed with the old directories with only two appended digits. How come changing the -2, -4 to :
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 3 chars
did not solve the problem?
Thanks,
MJ
# Multi_Output_Map_Algebra_sample.py
# Description:
# Runs an expression built with the Map Algebra language.
# Requirements: None
import arcgisscripting
import glob
import os
gisworkDir = 'c:\Giswork'
def log(s):
f = open("C:/tester.txt","w")
f.write(s)
f.close()
def allLandcoverDonutAndIdSuffix(gisworkDir):
'''Generates all tuples (landcover, donut, idSuffix) from the gisworkDir.'''
##log("1\n")
# Prepare the path to the donuts.
donutDir = os.path.join(gisworkDir, 'landcoverprepnew', 'Donut')
assert os.path.isdir(donutDir)
##log("2\n")
# Iterate through sequence of top-level landcover subdirectories.
mask = os.path.normpath(os.path.join(gisworkDir, 'Landcoverprepnew\landcover*'))
##log(mask)
for LDir in glob.glob(mask): # full paths to LandcoverA, LandcoverB, etc.
subdir = os.path.basename(LDir)
##log("3\n")
# Iterate through all numbered landcover subdirs inside.
mask2 = os.path.join(LDir, '*')
for LnumDir in glob.glob(mask2):
# Separate the counter part, the idSuffix and construct
# the related donut numbered directory name.
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
DnumDir = os.path.normpath(
os.path.join(donutDir, 'DONUT_' + numSuffix))
assert os.path.isdir(DnumDir)
##log("4/n")
# Generate another output tuple.
yield (LnumDir, DnumDir, idSuffix)
# Create the Geoprocessor object
gp = arcgisscripting.create()
expTemplate = '(%s, + (%s * 10))'
log("\n===== Output below: ====\n")
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuffix(gisworkDir):
# Construct the expression and the output directory name.
outDir = os.path.join(gisworkDir, 'landcoverprepnew', 'Results', idSuffix)
log("\n" + outDir)
InExpression = expTemplate % (donut, landcover)
log(" " + InExpression)
# Check out Spatial Analyst extension license
gp.CheckOutExtension("Spatial")
# Process: MapAlgebra
gp.SingleOutputMapAlgebra_sa(InExpression, outDir)
log("Msg: " + gp.GetMessages())
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ASKER
mish33:
I completed your suggestions as seen in the code snippet below. I got this error message:
C:\Documents and Settings\u4cncmgj>c:\pytho
\u4cncmgj\Desktop\mish_don
C:\GISWORK\Hibernacula\EUA
rnacula\EUA_805\TOCREATE20
Traceback (most recent call last):
File "C:\Documents and Settings\u4cncmgj\Desktop\
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "C:\Documents and Settings\u4cncmgj\Desktop\
llLandcoverDonutAndIdSuffi
assert os.path.isdir(DnumDir), "Dir %s not found" % DnumDir
AssertionError: Dir C:\GISWORK\Hibernacula\EUA
not found
The log test_mish outputted:
===== Output below: ====
Please advise,
Thank you kindly,
MJ
I completed your suggestions as seen in the code snippet below. I got this error message:
C:\Documents and Settings\u4cncmgj>c:\pytho
\u4cncmgj\Desktop\mish_don
C:\GISWORK\Hibernacula\EUA
rnacula\EUA_805\TOCREATE20
Traceback (most recent call last):
File "C:\Documents and Settings\u4cncmgj\Desktop\
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuff
File "C:\Documents and Settings\u4cncmgj\Desktop\
llLandcoverDonutAndIdSuffi
assert os.path.isdir(DnumDir), "Dir %s not found" % DnumDir
AssertionError: Dir C:\GISWORK\Hibernacula\EUA
not found
The log test_mish outputted:
===== Output below: ====
Please advise,
Thank you kindly,
MJ
# Multi_Output_Map_Algebra_sample.py
# Description:
# Runs an expression built with the Map Algebra language.
# Requirements: None
import arcgisscripting
import glob
import os
gisworkDir = 'C:/GISWORK/Hibernacula/EUA_805/TOCREATE2016'
def log(s):
f = open("C:/test_mish.txt","w")
f.write(s)
f.close()
def allLandcoverDonutAndIdSuffix(gisworkDir):
'''Generates all tuples (landcover, donut, idSuffix) from the gisworkDir.'''
##log("1\n")
# Prepare the path to the donuts.
donutDir = os.path.join(gisworkDir, 'Donut')
assert os.path.isdir(donutDir)
##log("2\n")
# Iterate through sequence of top-level landcover subdirectories.
mask = os.path.normpath(os.path.join(gisworkDir, 'landcover*'))
##log(mask)
for LDir in glob.glob(mask): # full paths to LandcoverA, LandcoverB, etc.
subdir = os.path.basename(LDir)
##log("3\n")
# Iterate through all numbered landcover subdirs inside.
mask2 = os.path.join(LDir, '*')
for LnumDir in glob.glob(mask2):
# Separate the counter part, the idSuffix and construct
# the related donut numbered directory name.
numSuffix = LnumDir[-3:] # last 3 chars
idSuffix = LnumDir[-5:] # last 5 chars
DnumDir = os.path.normpath(
os.path.join(donutDir, 'DONUT_' + numSuffix))
print LnumDir, DnumDir
assert os.path.isdir(DnumDir), "Dir %s not found" % DnumDir
##log("4/n")
# Generate another output tuple.
yield (LnumDir, DnumDir, idSuffix)
# Create the Geoprocessor object
gp = arcgisscripting.create()
expTemplate = '(%s, + (%s * 10))'
log("\n===== Output below: ====\n")
for landcover, donut, idSuffix in allLandcoverDonutAndIdSuffix(gisworkDir):
# Construct the expression and the output directory name.
outDir = os.path.join(gisworkDir, 'Results', idSuffix)
log("\n" + outDir)
InExpression = expTemplate % (donut, landcover)
log(" " + InExpression)
# Check out Spatial Analyst extension license
gp.CheckOutExtension("Spatial")
# Process: MapAlgebra
gp.SingleOutputMapAlgebra_sa(InExpression, outDir)
log("Msg: " + gp.GetMessages())
As you see in the error: Donut_aux not found
What do you want to do in that case?
What do you want to do in that case?
ASKER
I would like to continue without it.
ASKER CERTIFIED SOLUTION
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ASKER
Thanks.
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which the script expect to be.