Use function name/docstring for label/description of CalcFunctioNode

[ltalirz]

When running a calcfunction, the name of the function (here: testing) is shown as the process label in the verdi process list command. This is obviously very useful information.

$ verdi process list -a
 ...
 104  7s ago     ⏹ Finished [0]  testing
 ...

However, when looking at the generated CalcFunctionNode using verdi node show, label and description are empty.

$ verdi node show 104
\/Users/leopold/Applications/miniconda3/envs/aiida_rmq_py3/lib/python3.6/site-packages/psycopg2/__init__.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: <http://initd.org/psycopg/docs/install.html#binary-install-from-pypi>.
  """)
Property       Value
-------------  ------------------------------------
type           CalcFunctionNode
pk             104
uuid           dccc4421-4349-46cd-9203-41e485bcff0d
label
description
ctime          2019-04-01 12:13:02.502981+00:00
mtime          2019-04-01 12:13:02.902249+00:00
process state  ProcessState.FINISHED
exit status    0
Inputs      PK  Type
--------  ----  ------
a          103  Int
Outputs      PK  Type
---------  ----  ------
result      105  Int

I propose to populate the fields

• label by the name of the function
• description by the docstring of the function (if exists)

[sphuber]

Seems a very useful suggestion. I think it would make the most sense that these serve as a default and that explicitly specifying either of them in the metadata when calling the function should override. Do you agree?

[ltalirz]

I think it would make the most sense that these serve as a default and that explicitly specifying either of them in the metadata when calling the function should override. Do you agree?

Fully agreed!

[ltalirz]

Very nice, thanks @sphuber !