Latest Contributions by Zeke

I have a python toolbox which crawls directories, or optionally a single mxd, and writes out various properties of the layers in them to a csv file, mostly interested in the data source. This works great, except...,. I check for group layers to skip those. The tool does skip top level group layers, but not group layers nested in other group layers. How can I skip those? I originally set a default location and file name for the output csv file, which the user can change. This works if the file doesn't already exist, but if it does, that parameter gets a big red X when the tool is run. The file is set to 'w', so I assumed it would just overwrite the existing file. Is it possible to do what I thought would happen? In the self.description in the __init__ function, I'd like to break the text on different lines and paragraphs. But no matter how many \n's I add, the tool ignores them when run, and collapses the text into one block. Is there a way to accomplish this? Thanks, relevant code below. for mxd_path in mxd_list:     try:         mxd = arcpy.mapping.MapDocument(mxd_path)         dflist = arcpy.mapping.ListDataFrames(mxd)         for df in dflist:             for lyr in arcpy.mapping.ListLayers(mxd, '', df):                 if not lyr.isGroupLayer:                     nm = lyr.name                     ds = '-- X --'                     if lyr.supports('dataSource'):                         ds = lyr.dataSource                     lyr_attributes = [mxd_path, nm, ds]                     writer.writerow(lyr_attributes)                 else:                     if not lyr.isGroupLayer:                         arcpy.AddMessage('\nLayer {0} does not support the dataSource property'.format(nm))                         unsupported.append(nm)                         lngnm = lyr.longName     except Exception as e:         arcpy.AddError('EXCEPTION: {0}\t{1}\t{2}'.format(mxd_path, lngnm, e))         continue     writer.writerow([''])     del mxd ... View more