ANSWER: I was missing the 'feature_dataset=' from line 14 of my test code. Credit goes to Xander Bakker for the sample code that pointed this out arcpy . ListFeatureClasses ( feature_dataset = test_dataset ) Hey All, I have ArcMap installed at version 10.3.1 and I have several automation scripts, and I have recently noticed all my scripts that use arcpy.ListFeatureClasses() fatally error out at that tool. Is someone else able to confirm they are able to run this without any critical errors? I have just used the below code to test it bare basics, if someone else could please assist by changing the three variables to suit, does it run successfully? import arcpy connection = r "Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde" arcpy . env . workspace = connection test_dataset = r 'Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde\SDE_SPATIAL.GISADMIN.Airport' test_feature_within_dataset = r 'Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde\SDE_SPATIAL.GISADMIN.Airport\SDE_SPATIAL.GISADMIN.Airport_Lighting_Zones' print arcpy . Exists ( test_dataset ) print arcpy . Exists ( test_feature_within_dataset ) print 'It will fail at the next line of code' print arcpy . ListFeatureClasses ( test_dataset ) print '\n\nTEST COMPLETE' I am considering updating my machine to the latest version, but before I take this step I am hoping someone can confirm it doesn't work at this version? Thanks very much for your time. Cheers

The arcpy.ListFeatureClasses should not crash. There might be something wrong with permissions, but if you are using a local .sde file and that works for you manually, then it should also work in the standalone pythons script. Below a simple sample of looping through all the featureclasses in de GDB, import arcpy import os ws = r '' # your path to sde workspace arcpy . env . workspace = ws fdss = arcpy . ListDatasets ( ) fdss . append ( '' ) # for those fc that reside in the root of the sde ws for fds in fdss : fc_names = arcpy . ListFeatureClasses ( feature_dataset = fds ) for fc_name in fc_names : fc = os . path . join ( ws , fds , fc_name ) # do somthing with the fc print fc

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Anyone able to run arcpy.ListFeatureClasses() successfully?

BenVan_Kesteren1

ANSWER: I was missing the 'feature_dataset=' from line 14 of my test code. Credit goes to Xander Bakker for the sample code that pointed this out

arcpy<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">.</SPAN>ListFeatureClasses<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN style="color: #ff0000;"><STRONG>feature_dataset</STRONG><STRONG><SPAN class="" style="background: rgba(255, 255, 255, 0.5); border: 0px;">=</SPAN></STRONG><SPAN class="" style="background: rgba(255, 255, 255, 0.5); border: 0px; color: #000000;">test_dataset</SPAN></SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>

Hey All,

I have ArcMap installed at version 10.3.1 and I have several automation scripts, and I have recently noticed all my scripts that use arcpy.ListFeatureClasses() fatally error out at that tool.

Is someone else able to confirm they are able to run this without any critical errors?

I have just used the below code to test it bare basics, if someone else could please assist by changing the three variables to suit, does it run successfully?

<SPAN class="keyword token">import</SPAN> arcpy

connection <SPAN class="operator token">=</SPAN> r<SPAN class="string token">"Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde"</SPAN>
arcpy<SPAN class="punctuation token">.</SPAN>env<SPAN class="punctuation token">.</SPAN>workspace <SPAN class="operator token">=</SPAN> connection

test_dataset <SPAN class="operator token">=</SPAN> r<SPAN class="string token">'Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde\SDE_SPATIAL.GISADMIN.Airport'</SPAN>

test_feature_within_dataset <SPAN class="operator token">=</SPAN> r<SPAN class="string token">'Database Connections\GISADMIN@SDE_Spatial@SDE-DB.sde\SDE_SPATIAL.GISADMIN.Airport\SDE_SPATIAL.GISADMIN.Airport_Lighting_Zones'</SPAN>

<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>Exists<SPAN class="punctuation token">(</SPAN>test_dataset<SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>Exists<SPAN class="punctuation token">(</SPAN>test_feature_within_dataset<SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">print</SPAN> <SPAN class="string token">'It will fail at the next line of code'</SPAN>
<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN>test_dataset<SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">print</SPAN> <SPAN class="string token">'\n\nTEST COMPLETE'</SPAN>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Fatal error

I am considering updating my machine to the latest version, but before I take this step I am hoping someone can confirm it doesn't work at this version?

Thanks very much for your time.

Cheers

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Accepted answers

XanderBakker

The arcpy.ListFeatureClasses should not crash. There might be something wrong with permissions, but if you are using a local .sde file and that works for you manually, then it should also work in the standalone pythons script. Below a simple sample of looping through all the featureclasses in de GDB,

<SPAN class="keyword token">import</SPAN> arcpy
<SPAN class="keyword token">import</SPAN> os

ws <SPAN class="operator token">=</SPAN> r<SPAN class="string token">''</SPAN>&nbsp; <SPAN class="comment token"># your path to sde workspace</SPAN>
arcpy<SPAN class="punctuation token">.</SPAN>env<SPAN class="punctuation token">.</SPAN>workspace <SPAN class="operator token">=</SPAN> ws

fdss <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListDatasets<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
fdss<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN><SPAN class="string token">''</SPAN><SPAN class="punctuation token">)</SPAN>&nbsp; <SPAN class="comment token"># for those fc that reside in the root of the sde ws</SPAN>

<SPAN class="keyword token">for</SPAN> fds <SPAN class="keyword token">in</SPAN> fdss<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; fc_names <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN>feature_dataset<SPAN class="operator token">=</SPAN>fds<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">for</SPAN> fc_name <SPAN class="keyword token">in</SPAN> fc_names<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fc <SPAN class="operator token">=</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>ws<SPAN class="punctuation token">,</SPAN> fds<SPAN class="punctuation token">,</SPAN> fc_name<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># do somthing with the fc</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">print</SPAN> fc‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

All comments

Lake_Worth_BeachAdmin

Try a repair installation of desktop software

BenVan_Kesteren1

That single line of code crashes arcCatalog when I run it in the Python Window:

<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'SDE_SPATIAL.GISADMIN.Airport'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

This line works perfectly:

<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN>feature_dataset<SPAN class="operator token">=</SPAN><SPAN class="string token">'SDE_SPATIAL.GISADMIN.Airport'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

This script was working fine for over a year, I think the problem started when we updated from 10.3 to 10.3.1, but I cannot be 100% sure, it could be coincidental.

Thanks for your help.

BenVan_Kesteren1

Sorry I didn't expand on what was happening, if I run in catalog python window it was returning an empty list, but if I ran a standalone python window it would crash as per my original post and screenshot.

thanks for your time

XanderBakker

<SPAN class="keyword token">import</SPAN> arcpy
<SPAN class="keyword token">import</SPAN> os

ws <SPAN class="operator token">=</SPAN> r<SPAN class="string token">''</SPAN>&nbsp; <SPAN class="comment token"># your path to sde workspace</SPAN>
arcpy<SPAN class="punctuation token">.</SPAN>env<SPAN class="punctuation token">.</SPAN>workspace <SPAN class="operator token">=</SPAN> ws

fdss <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListDatasets<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
fdss<SPAN class="punctuation token">.</SPAN>append<SPAN class="punctuation token">(</SPAN><SPAN class="string token">''</SPAN><SPAN class="punctuation token">)</SPAN>&nbsp; <SPAN class="comment token"># for those fc that reside in the root of the sde ws</SPAN>

<SPAN class="keyword token">for</SPAN> fds <SPAN class="keyword token">in</SPAN> fdss<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp; fc_names <SPAN class="operator token">=</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN>feature_dataset<SPAN class="operator token">=</SPAN>fds<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">for</SPAN> fc_name <SPAN class="keyword token">in</SPAN> fc_names<SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fc <SPAN class="operator token">=</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>ws<SPAN class="punctuation token">,</SPAN> fds<SPAN class="punctuation token">,</SPAN> fc_name<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="comment token"># do somthing with the fc</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">print</SPAN> fc‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

JoshuaBixby

I agree, there probably is something more. When I mimic the OP's situation, List Feature Classes simply returns an empty list, it doesn't crash Python. That said, it will be interesting if passing proper arguments will work or if it will still crash.

DanPatterson_Retired

Good check... but crashing python is not what it should do. I suspect that there are other issues as well

JoshuaBixby

List Feature Classes assumes the workspace, and therefore the path, has already been set. You are passing a full path to List Feature Classes when it is expecting just a name. Try:

<SPAN class="keyword token">print</SPAN> arcpy<SPAN class="punctuation token">.</SPAN>ListFeatureClasses<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'SDE_SPATIAL.GISADMIN.Airport'</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN></SPAN>

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