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Detect ArcGIS tbx file version?

Question asked by curtvprice Champion on Dec 21, 2017
Latest reply on Dec 21, 2017 by Dan_Patterson

Is there a way to detect which version a Python toolbox is saved in? I want to double check a Python toolbox is readable by ArcGIS 10.1 or later without opening and resaving the toolbox in old format.


I would be happy with a magic string sequence I could find opening the tbx file as binary from Python. Thanks!


Yes I know .pyt is less version dependent -- one the selling points!