Latest Contributions by Zeke

I wrote the code below to list datasets and associated feature classes and shape types (point, polygon, etc.) in an sde. This works fine until I get to the last dataset, Zoning, which contains one feature class and one topology. There, it errors out with "RuntimeError: DescribeData: Method feature type does not exist". Also errors on shapeType if I don't check featureType first. Guessing this has something to do with desc not liking the topology, but is there a way around this other than catching the exception and then continue? Thanks. def getLists():     dsList = arcpy.ListDatasets("*")     for ds in dsList:         dsName = ds.split(".")         print dsName[2].upper()          print " - Feature Classes"         fcList = arcpy.ListFeatureClasses("*", "", ds)         if len(fcList) == 0:             print "\t - " + "No feature class in this dataset. \n"             continue         for fc in fcList:             desc = arcpy.Describe(fc)             if desc.featureType == "Simple":                 fcName = fc.split(".")                 desc = arcpy.Describe(fc)                 print "\t - " + fcName[2] + ": " + desc.shapeType         print "\n" ... View more

There are two fields in a topo line feature class, Elev for elevation and LineType10. I want to set LineType10 to 1 if Elev % 10 == 0, and 2 otherwise. The purpose is to be able to symbolize at ten foot intervals. I've got the code below, which doesn't give errors but also doesn't set any values. I've also used the plain % mod symbol. Any ideas why this doesn't run? Thanks. Pre-Logic def SetTen(elv, line):   if math.fmod(elv) == 0:     line = 1   else:     line = 2   return line Window SetTen( !Elev!, !LineType10!) ... View more

In the code below, I get a "TypeError: unsupported operand type(s) for +: 'NoneType and 'str'" on the f.write line. If I don't concatenate, it runs fine, but all the layer names run together. I understand what the error means, but not why I'm getting a NoneType. I've tried casting lyr.name to str, same result. All I'm trying to do is write out a text file of layer names. Any idea what's causing this and how to get around it? Thanks. for lyr in arcpy.mapping.ListLayers(mxd, "", df):         f.write(lyr.name) + "\n"         count += 1 ... View more