rename_management failed

ElaineKuo

System ArcGIS 9.3
python 2.5

Hello,

I have 100 polygon shapefiles in a folder (file names: geoc0923, geoc7634, and geoc3923).
Each of them has a field called CXXXX (string).
For example, geoc0923 has the field C0923.

I tried to dissolve the 100 polygon shapefiels based on the CXXXX field ("R").
The dissolve process went smoothly, but some error appeared when renaming the output shapefile.

The error shows
gp.rename_management("outputR.shp", fcName)
ExecuteError: ERROR 000012: H:/temp/test\geoc0387.shp already exists
Failed to execute (Rename).

Please kindly advise correction on the code below.
thank you

#Import standard library modules import arcgisscripting import os  #Create the Geoprocessor object gp = arcgisscripting.create(9.3)   #Set the workspace. gp.Workspace= "H:/temp/test"  #Set the workspace. List all of the feature classes in the dataset outWorkspace= "H:/temp"  #----------------------------------------------------------------- #Get a list of the featureclasses in the input folder fcs = gp.ListFeatureClasses()  # Loop through every item in the list that was just generated for fc in fcs:      # Break out the name, no path or extension, using the describe object.     desc = gp.describe(fc)     featureName = desc.name          #   Get a list of the fields in the featureclass     fields = gp.listFields(fc, "C*", "String")  #Select R  #-----------------------------------------------------------------              # Loop through every item in the list that was just generated      for field in fields:          gp.toolbox = "Data Management"         gp.addMessage(type(field))          # Select records (C*, i.e. C7658)         # Make temporary featureclasses         gp.toolbox = "Data Management"         query = "\"%s\" = 'R'" % field.Name              gp.select_analysis(fc,("outputR.shp"),query)          gp.Dissolve_management(fc,("outputR.shp"), field.Name)          #get file name         fcName, fcExt = os.path.splitext(fc)           # replace the strings you want to         fcName = fcName.replace("_Dissolve","")         fcName = fcName + fcExt          gp.rename_management("outputR.shp", fcName)         gp.delete("outputR.shp")      gp.AddMessage(gp.GetMessages()) print gp.GetMessages()

T__WayneWhitley

Hi Elaine, I see you are starting the new year trying to wrap up a task from yesteryear --- well, hope you are close to the finish so you can open up the year with new and exciting challenges, what do you say, are you ready?

I'd like to start with the obvious- 1st of all, you do not have the overwriteoutput property set, so that's 1 reason your code throws the error.  Moreover, you have a nested loop - looping on fields and in turn looping on fcs...it doesn't really make sense to create an output based on input, then within the loop attempt overwriting the same fc you are using for input, do you see?

I am going to guess based on your variables toward the beginning that you'd like to fetch all fcs from an input directory (which i assume is working fine) and use an output directory as you have attempted to define with outWorkspace?  You have to 'assemble' the appropriate pathname, then you won't have the renaming error - everything will be going to the root you defined...there are several 'less than optimal' practices going on in your code, but let's start with isolating the direct cause of your error.

Have I made the correct assumption that outWorkspace is your intended output folder?