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NOTE: The commands above will activate the most recent python 3 version of psana. Psana used to work with python 2, but this version of python has not maintained by the Python Software Foundation since January 1, 2020, and psana support has been discontinued. New You can use tools like the "2to3" command to migrate your code to python 3.  New psana versions do not support python 2, but it still possible to activate the last available python 2 environment (ana-4.0.45) by adding the py2  option to the psconda.sh  command:

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