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I am writing a VB.net console application that calls ArcGIS Desktop 10.1 ArcToolbox geoprocessing tools from my code. Some of these tools use Python syntax and I am encountering a problem that I suspect is caused by conflicting architectures. Is there a way to control which version of Python that ArcGIS uses?

  • System: 64 bit Windows 8.1
  • ArcGIS: 32 bit ArcGIS 10.1 Service Pack 1
  • Python: Both 32 and 64 bit versions installed (latter from ESRI's background processing download)
  • My App: 32 bit VB.net (not Any CPU) console application.
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See this prior answer. Each version of ArcGIS uses a specific version and architecture of Python and is hard-linked against it. Forcing an ArcObjects application to use an incompatible Python version will likely lead to a crash.

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