code: def calcMzFromMh(mh, charge):
      
      mz = (mh + (maspy.constants.atomicMassProton * (charge-1))) / charge
      return mz
docs: Calculate the mz value from MH+ and charge.
  
      :param mh: float, mass to charge ratio (Dalton / charge) of the mono
          protonated ion
      :param charge: int, charge state
  
      :returns: mass to charge ratio of the specified charge state