I ran into an issue that was solved by the new arcpy.env.scratchFolder functionality to force working in a folder.Unfortunately I was using 10.0, not 10.1. So, I created some Python functions that support this functionality in 9.x and 10.0. I ran into an issue when the scratch workspace is an invalid path -- so this is a fix for 10.1 as well.Any comments, fixes, or suggestions are welcomed.ModelBuilder users could use these functions in a Calculate Value code block to generate a "safe" scratch folder in their model tools.
def ScratchFolder():
"""env.scratchFolder for all versions of ArcGIS geoprocessing
1) If supported, return arcpy.env.scratchFolder (ArcGIS 10.1 or later)
2) Return a value based on ScratchWorkspace (ArcGIS 9.3 - 10.0)
a) Folder: scratchWorkspace
b) GDB: scratchWorkspace/../scratch
c) Not set or invalid: TEMP/scratch
Curtis Price - U.S. Geological Survey - cprice@usgs.gov
http://www.usgs.gov - science for a changing world
"""
import os
import arcgisscripting
gp = arcgisscripting.create()
try:
sw = gp.scratchWorkspace
if sw:
# check for invalid scratchWorkspace path
if not gp.Exists(sw):
gp.AddIDMessage("Warning", 873, "Invalid Scratch Workspace", sw)
raise
sw = gp.scratchFolder
except:
try:
sw = gp.scratchWorkspace
try:
swType = gp.Describe(sw).dataType
if swType == "Folder":
pass
elif swType == "Workspace":
pth = os.path.dirname(sw)
sw = os.path.join(pth, "scratch")
else:
raise
except:
sw = os.path.join(os.environ["TEMP"], "scratch")
finally:
sw = os.path.realpath(sw)
if not gp.Exists(sw): os.mkdir(sw)
return sw
def ScratchGDB():
"""env.scratchGDB for all versions of ArcGIS geoprocessing
1) If supported, return arcpy.env.scratchGDB (ArcGIS 10.1 or later)
2) Return a value based on ScratchWorkspace (ArcGIS 9.3 - 10.0)
a) GDB: scratchWorkspace
b) Folder: scratchWorkspace/scratch.gdb
c) Not set or invalid: TEMP\scratch.gdb
Curtis Price - U.S. Geological Survey - cprice@usgs.gov
http://www.usgs.gov - science for a changing world
"""
import os
import arcgisscripting
gp = arcgisscripting.create()
try:
sw = gp.scratchWorkspace
if sw:
# check for invalid scratchWorkspace path
if not gp.Exists(sw):
gp.AddIDMessage("Warning", 873, "Invalid Scratch Workspace", sw)
raise
sw = gp.scratchFolder
except:
try:
sw = gp.scratchWorkspace
swType = gp.Describe(sw).dataType
if swType == "Workspace":
pass
elif swType == "Folder":
sw = os.path.join(sw, "scratch.gdb")
except:
sw = os.path.join(os.environ["TEMP"], "scratch.gdb")
finally:
sw = os.path.realpath(sw)
if not gp.Exists(sw):
gp.CreateFileGDB_management(os.path.dirname(sw),
os.path.basename(sw))
return sw
