from scipy.constants import physical_constants as c


conversion_factors = {
'HARTREE_TO_EV': c['Hartree energy in eV'][0],
'EV_TO_HARTREE': 1.0 / c['Hartree energy in eV'][0],
'BOHR_TO_METER': c['Bohr radius'][0],
'BOHR_TO_ANGSTROM': c['Bohr radius'][0] / 1e-10,
'ANGSTROM_TO_BOHR':  1e-10 / c['Bohr radius'][0],
'ATU_TO_FEMTOSECOND': c['atomic unit of time'][0] / 1e-15
}


def main():
    import pprint
    pprint.pprint(conversion_factors)

if __name__ == '__main__':
    main()

