forte2.system.build_basis
=========================

.. py:module:: forte2.system.build_basis






Module Contents
---------------

.. py:data:: BSE_AVAILABLE
   :value: True


.. py:function:: build_basis(basis_assignment: str | dict, geometry, embed_normalization_into_coefficients: bool = True, decontract: bool = False) -> forte2.Basis

   
   Assemble the basis set from JSON data or Basis Set Exchange, depending on availability.


   :Parameters:

       **basis_assignment** : str or dict
           The basis set name or a dictionary with per-atom basis assignments.
           It is also possible to assign different basis sets to specific atomic indices (e.g. "O2" for the second oxygen atom).
           The dictionary should be in the format::
           
               {
                   "H": "cc-pvtz",
                   "O2": "cc-pvqz",
                   "default": "cc-pvdz"
               }
           
           where ``"default"`` is used for atoms not explicitly listed.

       **atoms** : list[tuple(int, list[float])]
           A list of tuples containing atomic numbers and coordinates.



   :Returns:

       **basis** : forte2.ints.Basis
           The basis set.











   ..
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