def __init__(self, name='', ion='', mw=0.0, chem_form='', num_ms2_peaks=0, f_acyl_lengths=[], unsats=[], ms2=[]):
    self.name = name
    self.ion = ion
    self.mw = mw
    self.chem_form = chem_form
    self.num_ms2_peaks = num_ms2_peaks
    self.ms2 = ms2
    self.f_acyl_lengths = f_acyl_lengths
    self.unsats = unsats
def __init__(self, name=, ion=, mw=0.0, chem_form=, num_ms2_peaks=0, f_acyl_lengths=[], unsats=[], ms2=[]):
    self.name = name
    self.ion = ion
    self.mw = mw
    self.chem_form = chem_form
    self.num_ms2_peaks = num_ms2_peaks
    self.ms2 = ms2
    self.f_acyl_lengths = f_acyl_lengths
    self.unsats = unsats