Python requirement

ArcGIS Desktop geoprocessing tools require that Python and the Python Win32 extension are installed. If the ArcGIS Desktop setup does not find Python or the Python Win32 extension on the target computer, it will install Python 2.1 and Win32all-151 extension during a typical or complete installation. You may choose a Custom installation to unselect the Python feature to avoid installing these features. Additionally, if the Python setup is executed during ArcGIS Desktop's installation, you will be provided with the opportunity to choose its installation location. The Python installation location can not include spaces.

You may visit the Python download site to install any version of Python and its corresponding Win32 extension prior to installing ArcGIS Desktop to meet this requirement.

To download and install Python, visit www.python.org/download.

To download and install Win32all, visit http://starship.python.net/crew/mhammond/win32/Downloads.html

Note

Any version of Python and its corresponding Win32all extension can be installed.

The following setup logic is used to determine whether the ArcGIS Desktop setup includes Python and Win32 as an installation feature:

If any version of Python and Win32 extension exists on the target machine, Python is not included in the ArcGIS Desktop setup.

If no version of Python or Win32 extension exist on the target machine, Python and Win32 are installed with a typical or complete ArcGIS Desktop setup. You may unselect the Python feature from a custom ArcGIS Desktop setup.

The ArcGIS Desktop geoprocessing tools that require Python and Win32 extension are:

Analysis Tools

Proximity Toolset

Multiple Ring Buffer

Conversion Tools

     To dBASE

           Table to dBASE (multiple)

     To Geodatabase

           Feature Class to Geodatabase (multiple)

           Table to Geodatabase (multiple)

        To Shapefile

           Feature Class to Shapefile (multiple)

 Spatial Statistics

     Analyzing Patterns

           Average Nearest Neighbor

           High/Low Clustering (Getis-Ord General G)

           Spatial Autocorrelation (Morans I)

        Mapping Cluster

            Cluster and Outlier Analysis (Anselin Local Morans I)

            Hot Spot Analysis (Getis-Ord Gi*)

         Measuring Geographic Distributions

            Central Feature

            Directional Distribution (Standard Deviation Ellipse)

            Linear Directional Mean

            Mean Center

            Standard Distance

         Utilities

            Calculate Areas

            Collect Events

            Count Rendering

            Export Feature Attribute to Ascii

            Z Score Rendering

Uninstalling Python

When Python 2.1 and Win32all-151 are installed by the ArcGIS Desktop setup, they are not uninstalled when you uninstall ArcGIS Desktop. You must manually remove them. The Add/Remove program items for them are

Python 2.1

Python 2.1 with Win32 extensions