Open Stack

Excerpts from Victor Stinner's message of 2016-01-11 11:15:56 +0100:
> Le 11/01/2016 10:37, Thierry Carrez a écrit :
> > Joshua Harlow wrote:
> >> [...]
> >> So I'd def help keep prettytable going, of course another option is to
> >> move to https://pypi.python.org/pypi/tabulate (which does seem active
> >> and/or maintained); tabulate provides pretty much the same thing
> >> (actually more table formats @
> >> https://pypi.python.org/pypi/tabulate#table-format ) than prettytable
> >> and the api is pretty much the same (or nearly).
> >>
> >> So that's another way to handle this (just to move off prettytable
> >> entirely).
> >
> > This sounds like a reasonable alternative...
> 
> 
> IMHO contributing to an actively developped library (tabulate) seems 
> more productive than starting to maintain a second library which is 
> currently no more maintained.
> 
> Does anyone know how much code should be modified to replace prettytable 
> with tabulate on the whole OpenStack project?

We seem to have a rather long list of things consuming PrettyTable:

$ grep -i prettytable */*requirement*.txt
automaton/requirements.txt:PrettyTable<0.8,>=0.7
cliff/requirements.txt:PrettyTable<0.8,>=0.7
cloudv-ostf-adapter/requirements.txt:PrettyTable>=0.7,<0.8
distil/requirements.txt:prettytable==0.7.2
faafo/requirements.txt:PrettyTable>=0.7,<0.8
fairy-slipper/requirements.txt:prettytable
gnocchi/requirements.txt:prettytable
ironic-lib/requirements.txt:PrettyTable<0.8,>=0.7
kolla-mesos/requirements.txt:PrettyTable<0.8,>=0.7
magnum/requirements.txt:PrettyTable<0.8,>=0.7
nova/requirements.txt:PrettyTable<0.8,>=0.7
openstack-ansible/requirements.txt:PrettyTable>=0.7,<0.8   # scripts/inventory-manage.py
python-blazarclient/requirements.txt:PrettyTable>=0.7,<0.8
python-ceilometerclient/requirements.txt:PrettyTable<0.8,>=0.7
python-cinderclient/requirements.txt:PrettyTable<0.8,>=0.7
python-evoqueclient/requirements.txt:PrettyTable<0.8,>=0.7
python-glanceclient/requirements.txt:PrettyTable<0.8,>=0.7
python-heatclient/requirements.txt:PrettyTable<0.8,>=0.7
python-ironicclient/requirements.txt:PrettyTable<0.8,>=0.7
python-keystoneclient/requirements.txt:PrettyTable<0.8,>=0.7
python-magnumclient/requirements.txt:PrettyTable<0.8,>=0.7
python-manilaclient/requirements.txt:PrettyTable<0.8,>=0.7
python-monascaclient/requirements.txt:PrettyTable>=0.7,<0.8
python-muranoclient/requirements.txt:PrettyTable<0.8,>=0.7
python-novaclient/requirements.txt:PrettyTable<0.8,>=0.7
python-rackclient/requirements.txt:PrettyTable>=0.7,<0.8
python-saharaclient/requirements.txt:PrettyTable<0.8,>=0.7
python-searchlightclient/requirements.txt:PrettyTable<0.8,>=0.7
python-senlinclient/requirements.txt:PrettyTable<0.8,>=0.7
python-surveilclient/requirements.txt:prettytable
python-troveclient/requirements.txt:PrettyTable<0.8,>=0.7
python-tuskarclient/requirements.txt:PrettyTable<0.8,>=0.7
rally/requirements.txt:PrettyTable<0.8,>=0.7
requirements/global-requirements.txt:PrettyTable>=0.7,<0.8
sahara/test-requirements.txt:PrettyTable<0.8,>=0.7
scalpels/requirements.txt:PrettyTable>=0.7,<0.8
stacktach-klugman/requirements.txt:prettytable
vmtp/requirements.txt:prettytable>=0.7.2
vmware-nsx/requirements.txt:PrettyTable<0.8,>=0.7

I suspect we could skip porting a lot of those, since they look like
clients and we're working to move all command line programs into the
unified client.

That leaves 18:

$ grep -i prettytable */*requirement*.txt | grep -v client
automaton/requirements.txt:PrettyTable<0.8,>=0.7
cliff/requirements.txt:PrettyTable<0.8,>=0.7
cloudv-ostf-adapter/requirements.txt:PrettyTable>=0.7,<0.8
distil/requirements.txt:prettytable==0.7.2
faafo/requirements.txt:PrettyTable>=0.7,<0.8
fairy-slipper/requirements.txt:prettytable
gnocchi/requirements.txt:prettytable
ironic-lib/requirements.txt:PrettyTable<0.8,>=0.7
kolla-mesos/requirements.txt:PrettyTable<0.8,>=0.7
magnum/requirements.txt:PrettyTable<0.8,>=0.7
nova/requirements.txt:PrettyTable<0.8,>=0.7
openstack-ansible/requirements.txt:PrettyTable>=0.7,<0.8   # scripts/inventory-manage.py
rally/requirements.txt:PrettyTable<0.8,>=0.7
requirements/global-requirements.txt:PrettyTable>=0.7,<0.8
sahara/test-requirements.txt:PrettyTable<0.8,>=0.7
scalpels/requirements.txt:PrettyTable>=0.7,<0.8
stacktach-klugman/requirements.txt:prettytable
vmtp/requirements.txt:prettytable>=0.7.2
vmware-nsx/requirements.txt:PrettyTable<0.8,>=0.7

There are a few server projects, and I assume they are using the
lib in their management commands.  I'm sure there are shell scripts
out there parsing the rendered tables.  Does tabulate produce tables
using the exact same format as PrettyTable?

We could justify moving cliff, since it makes it easy to produce
more parsable output using selectable formatters, but some of those
other consuming projects may be a bit harder to change if we want
to maintain our backwards compatibility requirements.

There are a few libraries on the list, too (automaton, ironic-lib), and
that's confusing. It would be interesting to know how they're using
table output.

Doug

> 
> --
> 
> I don't like the global trend in OpenStack to create a new community 
> separated from the Python community. In general, OpenStack libraries 
> have too many dependencies and it's harder to contribute to other 
> projects. Gerrit is less popular than Github, and OpenStack requires to 
> sign a contributor agreement. I would prefer to stop moving things into 
> OpenStack and continue to contribute to existing projects, as we already do.
> 
> (I also know why projects are moved into OpenStack "big tent", they are 
> some good arguments.)
> 
> Well, that's my feeling that OpenStack and Python communities are 
> splitted, maybe I'm wrong ;-) I just want to avoid what happened in 
> Zope: a lot of great code and great libraries, but too many dependencies 
> and at the end a different community.
> 
> Victor
>