fiasco provides a Python interface to the CHIANTI, an atomic database used primarily for astrophysical spectroscopy. In addition to several high-level abstractions of the atomic data, fiasco also provides many common atomic physics calculations.

pip install fiasco

The CHIANTI atomic database is also required. See the docs for more details.

The primary interface in fiasco is the Ion object:

>>> import fiasco
>>> import astropy.units as u
>>> fe_18 = fiasco.Ion('Fe XVIII', 1*u.MK)
>>> fe_18
CHIANTI Database Ion
---------------------
Name: Fe 18
Element: iron (26)
Charge: +17
Number of Levels: 337
Number of Transitions: 7712

Temperature range: [1.000 MK, 1.000 MK]

HDF5 Database: ...chianti_dbase.h5
Using Datasets:
    ioneq: chianti
    abundance: sun_coronal_1992_feldman_ext
    ip: chianti

For a quick start guide to using fiasco, see this page of the documentation. For more advanced examples, see the example gallery.

If you use fiasco in any published work, please cite the appropriate version of the software as well as the CHIANTI atomic database. See this page for additional details.

A fiasco, or flask, is the typical style of bottle used to serve the Chianti Classico wine. It is typically larger and rounder at the bottom and is covered by a straw basket. In the same way, the fiasco package serves up the CHIANTI atomic database.