LSSTDESC
camb bbn module not always available
I have managed to encounter a situation in which the line:
https://github.com/LSSTDESC/CCL/blob/dfa2b3b7be13afef0da11b5c4392e413af4e67eb/pyccl/boltzmann.py#L118
returns an error as the camb.bbn module is not directly available.
Confusingly (for me anyway), the bbn module is listed in the camb docs, but not in the camb __init__.py here.
I have also been able to directly access camb.bbn at other times 🤷 .
Either way I note that camb.model.bbn is always available, so an easy fix would be to replace the above line with
cp.bbn_predictor = camb.model.bbn.get_predictor()
...okay, this also happens with camb.constants (with camb.model.constants being available). I will try and work out what has gone strange with the camb import I am using (from cobaya packages).
@itrharrison did you figure out if this is a general issue we should solve or just a result of your particular import system?
@itrharrison , I'll close this for now, but let me know if you think this is a general issue we should worry about.