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Overwrite files in Python Scripts ArcGIS 10

LyonMNGIS

I would like to overwrite the outputs of my python geoprocessing script in ArcGIS 10. How can I do this?

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Lake_Worth_BeachAdmin

I mean to be fair, all True values need to be True and not true in python. but agreed its a typo and should be fixed.

DanPatterson_Retired

You would be advised to rely on your Python IDE (eg. PythonWin, Pyscripter etc) to obtain a list of applicable functions and help.

>>> dir(arcpy.env)
['MDomain', 'MResolution', 'MTolerance', 'XYDomain', 'XYResolution', 'XYTolerance', 'ZDomain', 'ZResolution', 'ZTolerance', '__class__', '__delattr__', '__delitem__', '__dict__', '__doc__', '__format__', '__getattribute__', '__getitem__', '__hash__', '__init__', '__iter__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_environments', '_gp', '_refresh', 'autoCommit', 'cartographicCoordinateSystem', 'cellSize', 'coincidentPoints', 'compression', 'configKeyword', 'derivedPrecision', 'extent', 'geographicTransformations', 'items', 'iteritems', 'keys', 'maintainSpatialIndex', 'mask', 'newPrecision', 'outputCoordinateSystem', 'outputMFlag', 'outputZFlag', 'outputZValue', 'overwriteOutput', 'projectCompare', 'pyramid', 'qualifiedFieldNames', 'randomGenerator', 'rasterStatistics', 'referenceScale', 'scratchWorkspace', 'snapRaster', 'spatialGrid1', 'spatialGrid2', 'spatialGrid3', 'terrainMemoryUsage', 'tileSize', 'tinSaveVersion', 'values', 'workspace']

As indicated, there are places where case-sensitivity or examples are lacking....report them, they are usually on the fixes quickly.

Also, use the online help and NOT the help built into the software, the former is updated regularly, the latter is not

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html?TopicName=welcome

JohnSchmid

This frustrated me for an hour. arcpy is INDEED case sensitive, but the real crime is that ALL OVER esri help docs there is varying case used as if it would work in the examples. On top of that, most examples never show the env module, and show it this way (which will not work!!):

arcpy.overwriteOutput = True

(I've even seen this in the esri help docs, which will not work: arcpy.env.overwriteOutput = true)

when it should be:

arcpy.env.overwriteOutput = True

IN THE HELP docs for Heaven sakes!!!! ESRI, tidy up the help docs!!!!! HOUSEKEEPING!

ChrisSnyder

Oh my, that's so ESRI...

I have a A LOT of code to rewrite!

JoeFlannery

Mark:

I was successful in ArcGIS 10 using:

# Overwrite pre-existing files
arcpy.env.overwriteOutput = True

In Python, I think that upper/lower-case text makes a difference in successful coding.

LyonMNGIS

Chris,

Thank you for your reply. Unfortunatly I was unable to get the code to work with arcpy.OverwriteOutput = True or arcpy.OverwriteOutput = 1

ChrisSnyder

In v9.3 it was:

gp.overwriteoutput = True

So I am assuming in v10 it would be:

arcpy.overwriteoutput = True

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