How to load Batoms from a collection?

When we restart from a .blend file. We can rebuild the Batoms objects from collections. Keyword label in Batoms object is uesd to load a Batoms collection by the name.

Molecule:

>>> from batoms import Batoms
>>> co = Batoms(label = 'co')
../_images/ase-co.png

Crystal:

>>> from batoms import Batoms
>>> fe = Batoms(label = 'fe')
../_images/ase-fe.png