# %load_ext autoreload
# %autoreload 2

# from aa2atom import atom2mass, aa2atom
# from aa2atom.formulas import dictformula2str

# f = aa2atom("ACEF")
# atom2mass(f)
# atom2mass(dictformula2str(f))
# atom2mass(dictformula2str(f), which_mass='average')
