def __init__(self, relative_humidity=<NUM_LIT>, qStrat=<NUM_LIT>, **kwargs):
super(FixedRelativeHumidity, self).__init__(**kwargs)<EOL>newinput = ['<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',]<EOL>self.declare_input(newinput)<EOL>self.relative_humidity = relative_humidity<EOL>self.qStrat = qStrat<EOL>self.RH_profile = self.relative_humidity * np.ones_like(self.Tatm)<EOL>self.add_diagnostic('<STR_LIT:q>', <NUM_LIT:0.>*self.Tatm)<EOL>self._compute()<EOL>
Compute water vapor mixing ratio profile
        Assuming constant relative humidity.

        relative_humidity is the specified RH.
        Same value is applied everywhere.
        qStrat is the minimum specific humidity, ensuring that there is
        some water vapor in the stratosphere.

        The attribute RH_profile can be modified to set different
        vertical profiles of relative humidity
        (see daughter class ManabeWaterVapor() ).