DOC: Add a note that one should preferably use `contextlib.nullcontext`
DOC: Add a note that one should preferably use `contextlib.nullcontext`

pdebuyl/numpy,anntzer/numpy,pbrod/numpy,charris/numpy,madphysicist/numpy,endolith/numpy,seberg/numpy,charris/numpy,pbrod/numpy,simongibbons/numpy,pbrod/numpy,simongibbons/numpy,mhvk/numpy,numpy/numpy,pbrod/numpy,mhvk/numpy,numpy/numpy,jakirkham/numpy,seberg/numpy,jakirkham/numpy,mattip/numpy,charris/numpy,pdebuyl/numpy,anntzer/numpy,seberg/numpy,numpy/numpy,jakirkham/numpy,seberg/numpy,rgommers/numpy,anntzer/numpy,mattip/numpy,endolith/numpy,simongibbons/numpy,simongibbons/numpy,numpy/numpy,charris/numpy,rgommers/numpy,simongibbons/numpy,mattip/numpy,mhvk/numpy,pdebuyl/numpy,pdebuyl/numpy,madphysicist/numpy,jakirkham/numpy,mhvk/numpy,anntzer/numpy,endolith/numpy,madphysicist/numpy,pbrod/numpy,endolith/numpy,mattip/numpy,madphysicist/numpy,madphysicist/numpy,jakirkham/numpy,mhvk/numpy,rgommers/numpy,rgommers/numpy