Composition
===================

Describes an arbitrary elemental composition

.. automodule:: glypy.composition.composition

    .. autoclass:: CComposition
        :members: mass, __getitem__, __setitem__, keys, values, items, calc_mass, clone

    .. autofunction:: calculate_mass

    .. autofunction:: formula

    .. autofunction:: most_probable_isotopic_composition

    .. autofunction:: isotopic_composition_abundance