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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def patch(self, nml_patch):
 """Update the namelist from another partial or full namelist. This is different from the intrinsic `update()` method, which replaces a namelist section. Rather, it updates the values within a section. """

        for sec in nml_patch:
            if sec not in self:
                self[sec] = Namelist()
            self[sec].update(nml_patch[sec])