[Bug 1675394] Re: Unhelpful error message when neutron server is unavailable

[Immaculate Atim]

Hello, I am an outreachy applicant.

I would like to submit a patch for the stable/ocata branch that fixes
this issue if it is decided that this is the right way to fix this
issue.

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https://bugs.launchpad.net/bugs/1675394

Title:
  Unhelpful error message when neutron server is unavailable

Status in python-openstackclient:
  Confirmed
Status in python-openstackclient package in Ubuntu:
  Confirmed

Bug description:
  When the neutron API is unavailable, I'm getting this error message
  which is not really helpful:

  $ openstack extension list --network
  'unicode' object has no attribute 'get'

  The neutron CLI is showing the real error:

  $ neutron ext-list
  neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
  The server is currently unavailable. Please try again at a later time.<br /><br />

  $

  Running with --debug verifies that OSC is getting the same response,
  just doesn't handle it well, see attached output.

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