Doing an intersection and some files already exist.Is it possible to tackle this error specifically and not with try except in general?

    for i in cur:
        Intersect_analysis (in_features, out_feature_class)
except arcpy.ExecuteError as e:

file already exists.

This may pass any execute error instead of just this with a file being already there.


Since the above error stopped the whole program and now has to restart, another plan would be to search in the gdb which feature layers aren't there and proceed to do the intersect only to the new ones that haven't been processed due to the program stop.

  • 3
    if not arcpy.Exists(out_feature_class): – Tom Nov 8 '18 at 15:41
  • I think @Tom has the answer but if the feature class exists but contains no features due to a previous failure it would still be skipped, you could include elif int(arcpy.GetCount_management(out_feature_class).getOutput(0)) == 0: arcpy.Delete_managment(out_feature_class) then arcpy.Intersect_analysis (in_features, out_feature_class) to be sure the empty feature class is because there are no intersecting features and not a failure in the geometry engine. – Michael Stimson Nov 12 '18 at 3:07

You can tell arcpy to overwrite any outputs if you wish:

The following should do the trick:

   >>> from arcpy import env
   >>> env.overwriteOutput = True


  • 2
    Yeah although this wouldn't cause error it would double the processing. – user51332 Nov 9 '18 at 6:59

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