Simple way to determine if Jep is built with numpy support?

Erik J

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Sep 22, 2020, 3:57:42 PM9/22/20

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Hi everyone. We have some existing code that has run fine for several years but broke with a recent SW upgrade. I think it may be that Jep is now installed prior to numpy and therefore does not have numpy support. Is there a simple way to test for this in an existing install? Our symptom is that a PyJArray object that is passed into NDArray() is returned as a PyJObject and not an NDArray. If there is a simple way to confirm the numpy support?

Thanks for any help you can give me,
Erik

Nathan Jensen

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Sep 22, 2020, 5:08:07 PM9/22/20

to Erik J, Jep Project

You should be able to run the jep script at the command line, and then in the interpreter do

import jep

jep.JEP_NUMPY_ENABLED

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Erik Johansson

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Sep 23, 2020, 2:10:37 PM9/23/20

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Sorry, forgot to reply-all:

Thanks, Nathan! That confirmed the problem:

>>> import jep
>>> jep.JEP_NUMPY_ENABLED
0
>>>

Erik

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National Solar Observatory
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Erik J

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Sep 23, 2020, 2:36:05 PM9/23/20

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Hi everyone,

I'm posting this in case someone else runs into the same problem. Our install process switched to using pip with a requirements.txt file. It turns out that even though Jep was the last package in the list, it got built first and a wheel was created, before numpy was installed. Hence, the Jep installation did not include support for numpy, which broke codes that ran fine previously. We have solved the problem by removing Jep from the requirements list and into its own requirements file and installing it after the other requirements are installed.