I've copy and pasted this line from README:

pip install git+git://github.com/meherett/python-hdwallet.git

but I think it's wrong and it generates the error:

  Running command git clone --filter=blob:none --quiet git://github.com/meherett/python-hdwallet.git /tmp/pip-req-build-bbr7o_g2
  fatal: unable to connect to github.com:
  github.com[0: 20.26.156.215]: errno=Connection timed out

I think this should be git+ssh, e.g.

pip install git+ssh://github.com/meherett/python-hdwallet.git

which seems to work.