Error when importing classy

[rodrigovonmarttens]

I've installed CLASS following all the instructions, but when I try to import classy on python, it returns the following error message:

Traceback (most recent call last):
File "", line 1, in
ImportError: dlopen(//opt/anaconda3/lib/python3.8/site-packages/classy.cpython-38-darwin.so, 2): Symbol not found: _background_at_tau
Referenced from: //opt/anaconda3/lib/python3.8/site-packages/classy.cpython-38-darwin.so
Expected in: flat namespace
in //opt/anaconda3/lib/python3.8/site-packages/classy.cpython-38-darwin.so

Does anyone knows how to fix that please?

[ShazAlvi]

Hi, if I am to make a guess some package has not been installed. Have you installed all the required packages? Also, make sure that you compile CLASS in the conda environment that you are using (I am judging by the path that you are working in a conda environment).

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On Mon, Apr 26, 2021 at 5:45 AM Rodrigo von Marttens < ***@***.***> wrote: I've installed CLASS following all the instructions, but when I try to import classy on python, it returns the following error message: Traceback (most recent call last): File "", line 1, in ImportError: dlopen(//opt/anaconda3/lib/python3.8/site-packages/ classy.cpython-38-darwin.so, 2): Symbol not found: _background_at_tau Referenced from: //opt/anaconda3/lib/python3.8/site-packages/ classy.cpython-38-darwin.so Expected in: flat namespace in //opt/anaconda3/lib/python3.8/site-packages/classy.cpython-38-darwin.so Does anyone knows how to fix that please? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#416>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APD5PLWGIEJ7BPPENDX5L4LTKTOUHANCNFSM43SATEMQ> .

[rodrigovonmarttens]

Many thanks, @ShazAlvi !

Actually, I've been able to solve this issue by pointing out the gcc installed with brew in the gcc entry on the Makefile.