Ok this was due to an install of miniconda then choosing to unconditionally install an older version of cryptography.
> On Feb 10, 2021, at 3:40 PM, Robert Nicholson <robert.nichol...@gmail.com> > wrote: > > Just reinstalling cryptography with pip install seems to have fixed my issue. > > Any pointers on why? > >> On Feb 10, 2021, at 3:21 PM, Robert Nicholson <robert.nichol...@gmail.com> >> wrote: >> >> I’m using Python 3.7.0 >> >> so I have multiple environments all on the same architecture with the same >> python release using anonconda. >> >> What I discovered was that if I install the cryptography module in my dev / >> uat and then tried to synchronize to production server using rsync I ended >> up with errors relating to dependencies of the cryptography module. >> >> Specifically >> >> Cannot import name ‘_get_backend’ >> >> these errors appear to have gone away if I actually use pip install >> cryptography==3.2.1 instead of using rsync from an existing install machine. >> >> why is this the case? >> >> >> > -- https://mail.python.org/mailman/listinfo/python-list
