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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 read_projected_dos( self ):
 """ Read the projected density of states data into """

        pdos_list = []
        for i in range( self.number_of_atoms ):
            df = self.read_atomic_dos_as_df( i+1 )
            pdos_list.append( df )
        self.pdos = np.vstack( [ np.array( df ) for df in pdos_list ] ).reshape( 
            self.number_of_atoms, self.number_of_data_points, self.number_of_channels, self.ispin )