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install arcpy on 9.3.1?

runegullstrom

Hi,

I've tried to install arcpy* on my 9.3.1 machine but
when I import arcpy in a script it fails. Is it possible at all?

(*just copied the arcpy dir across from a machine with arcgis 10 and
adjusted all the paths I thought necessary)

regards,

Rune

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GroundHogg

The v10 arcpy "site-package" and associated functionality is not backwards compatible. There is no "hack" as the code/functionality in arcpy simply does not exist in the v9.3 libraries.

Generally however, the v9.x gp object created with these three different methods IS forward compatible:
gp = win32com.client.Dispatch("esriGeoprocessing.GpDispatch.1") #valid for v9.0, v9.1, v9.2, v9.3, and v10.0
gp = arcgisscripting.create() #valid for v9.2, v9.3, and v10.0
gp = arcgisscripting.create(9.3) #valid for v9.3 and v10.0

I have version 10.0, none of those methods work: I get the error "No module named argisscripting".

I also can't find any information so far on how you create gp object in version 10.0, there are .net ArcObjects examples, but none in python. the only reason I want it is so I can use the Dispatch method, win32com is not referenced (or installed apparently), and arcgisscripting appears to be deprecated as well.

LoganPugh

Why not create an empty template feature class (just in ArcCatalog, not in code) with all the fields you need once, and then each time your script/model runs have it create a new feature class (Copy Features or Create Feature Class) from the template and populate (Append) it with the appropriate data?

ChrisSnyder

How about somthing like:

fieldInfoList = [["FIELD1", "LONG"],["FIELD2", "TEXT", "30"],["FIELD3", "DOUBLE"]]
for fieldInfo in fieldInfoList:
   if fieldInfo[1] in ("LONG","SHORT","DOUBLE","FLOAT"):
      gp.AddField_management (layer, fieldInfo[0], fieldInfo[1])
   elif fieldInfo[1] == "TEXT":
      gp.AddField_management (layer, fieldInfo[0], fieldInfo[1], "", "", fieldInfo[2])
   else:
      print "Uh oh!"

ChrisSnyder

How about:

fieldInfoList = [["FIELD1", "LONG"],["FIELD2", "TEXT", "30"],["FIELD3", "DOUBLE"]]
for fieldInfo in fieldInfoList:
   if fieldInfo[1] in ("LONG","SHORT","DOUBLE","FLOAT"):
      gp.AddField_management (layer, fieldInfo[0], fieldInfo[1])
   elif fieldInfo[1] == "TEXT":
      gp.AddField_management (layer, fieldInfo[0], fieldInfo[1], "", "", fieldInfo[2])
   else:
      print "Uh oh!"

ClaireInbody

I am not a programmer so I was using arcpy because its easy to use for me the GIS person. I want to avoid using our company programmers as they other things to work on. Maybe build a model for it export to python? I am trying to add 60 plus fields to a shapefile automatically instead of the user creating it manually. Since it is something they will be doing alot, but the model was going to be huge...(tons of add field tools!)

ChrisSnyder

Another possibility I have been trying to mess with a bit (with no success BTW):

Use the Telnet (or similar) protocol to in effect run commands on a different box... Seems like most of the Python commands for this sort of thing were written for Unix platforms, but they say they are supported on Windows too. Hmm...

Anyone ever try to do this (Telnet, SSH, or use the "host" parameter with the subproccess module)?

The potential is pretty cool. You could write "grid computing" geoprocessing scripts.

NiklasNorrthon

As other said before there probably isn't a way to make arcpy work in pre 10 verisons.

If the functionallity is really, really, really important and installing 10 is not an option I can see only one obvious way forward: Use ArcObjects programming in VB, .Net or some other language supporting COM. (In theory it is even possilbe to do this in python with the pywin32 package, but that is not a path that I would follow).

ChrisSnyder

The v10 arcpy "site-package" and associated functionality is not backwards compatible. There is no "hack" as the code/functionality in arcpy simply does not exist in the v9.3 libraries.

Generally however, the v9.x gp object created with these three different methods IS forward compatible:
gp = win32com.client.Dispatch("esriGeoprocessing.GpDispatch.1") #valid for v9.0, v9.1, v9.2, v9.3, and v10.0
gp = arcgisscripting.create() #valid for v9.2, v9.3, and v10.0
gp = arcgisscripting.create(9.3) #valid for v9.3 and v10.0

JasonScheirer

There is no way to do this; arcpy depends on a significant number of new 10.0 features and links against a new version of Python (2.6, will not be binary compatible with the 2.5 version installed with 9.3).

ClaireInbody

I want to do the same thing. Did you find a solution for this? I created an arcpy script that needs to run in 9.3.1.

runegullstrom

Thanks,

well, that's what I'm doing now but I have to copy the mxd's to the arcgis10 machine.
I wanted to schedule a task on all boxes to get reports on what fc's are being used by which mxd's/mapservices without manual interference. I have to copy the mxd's to the arcgis10 box because we're restricted in making shares to servers,

cheers

ChrisMathers

Think of arcgisscripting as a com object that calls out to the geoprocessor. When you import arcpy you dont import the geoprocessor just classes that send data into it and get results back from it. The actual geoprocessor is part of the ArcGIS core. If one computer has 10 already why not just run the scripts from there?

runegullstrom

Installing the Arcgis 10 geoprocessor, does that involve just copying arcgisscripting.pyd?
If not, is there a hack?

I would like to go through all the mxd's on 4 arcserver machines (dev,tst,etc) to get reports on what mxd's are referring to what fc's. We're not ready to start installing ArcServer 10 on those machines yet.

Referring to my initial post: I not only copied over the arcpy dir and adjusted the paths, I also installed python 2.6

cheers

ChrisMathers

No because arcpy requires ArcGIS 10 geoprocessor to be installed. The 9.3.* geoprocessor interfaces with python 2.5 and the 10 geoprocessor interfaces with python 2.6 so there is some version disconnect there as well.

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