Windows activate does not work in a batch file

[asmeurer]

See https://groups.google.com/a/continuum.io/forum/#!topic/anaconda/QMwqUbaVQDc. If you run

activate py33
python -V

in a batch file, it does not work, but if you run

activate py33 && python -V

it does. I did not verify it yet.

[wulmer]

I think when running these commands from inside a batch file, activate and deactivate should be used together with the call statement:

call activate py33
python -V
call deactivate
python -V

This gives for me correctly:

Activating environment "py33"...
Python 3.3.5 :: Continuum Analytics, Inc.
Deactivating environment "py33"...
Python 2.7.7 :: Anaconda 2.0.1 (64-bit)

[djhoese]

I ran in to this issue myself and I'm really happy I found this report after spending way too long trying to find my own work around. Using call seemed to work as I expected. I was able to do stuff like:

call activate myenv || echo It Failed

This was on a Windows 7 laptop.

[wulmer]

@msarahan I think this issue can be closed.

[msarahan]

Thanks @wulmer, agreed. Thanks also @davidh-ssec for the example of how to activate in a script.

[Mathnerd314]

It would be nice if this was documented somewhere more obvious, e.g. under https://conda.io/docs/using/envs.html#change-environments-activate-deactivate

[github-actions]

Hi there, thank you for your contribution to Conda!

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