GIS + Python: Lists and Sublists (?)

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  • twdesign
    New Member
    • Aug 2008
    • 1

    GIS + Python: Lists and Sublists (?)

    I am a Python newbie! I'm trying to list the feature classes in a dataset (Access .MDB) and then list the fields in each feature class.

    I'm able to list the feature classes and I'm able to list the fields in a particular feature class if I name it specifically. For example, PARCEL is one of the feature classes listed in the dataset return. If I put "PARCEL" in the list fields criteria I get the field information for parcels. I would like to make it so that for each feature class returned it then lists the field information after it. I envisioned doing this with the list function, a loop (listing feature classes), and a sub-loop (listing fields from the feature classes. I feel like I'm close but that there is a small tweak that can be done or a more efficient way of going about this. I have listed the code below. Any help would be appreciated!
    -Ty

    ## Import modules
    import win32com.client , os.path, sys
    gp = win32com.client .Dispatch("esri Geoprocessing.G pDispatch.1")

    ## Set workspace
    gp.workspace = "C:\\Temp\\Zoni ng_Update_Final _060908.mdb"

    #### List Datasets
    dsList = gp.ListDatasets ("*", "all")
    ds = dsList.Next()
    while ds <> "":
    print "DATASET:", ds
    ds = dsList.Next()

    ## Set New workspace
    gp.workspace = "C:\\Temp\\Zoni ng_Update_Final _060908.mdb\\La yers"

    ## List Featureclasses
    fcList = gp.ListFeatureC lasses ("*", "all")
    fc = fcList.Next()
    while fc <> "":
    print fc
    fc = fcList.Next()

    fList = gp.ListFields ("Parcel", "*", "all")
    f = fList.Next()
    while f <> None:
    print "NAME:",f.N ame
    print "TYPE:",f.T ype
    print "LENGTH:",f.Len gth
    print "PRECISION:",f. Precision
    print "SCALE:",f.Scal e
    print "NULL:",f.IsNul lable
    print "DOMAIN:",f.Dom ain
    f = fList.Next()
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