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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 proc_atom(self):
 """Processes an "ATOM" or "HETATM" record."""

        atom_data = self.proc_line_coordinate(self.current_line)
        (at_type, at_ser, at_name, alt_loc, res_name, chain_id, res_seq,
         i_code, x, y, z, occupancy, temp_factor, element, charge) = atom_data
        # currently active state
        a_state = self.pdb_parse_tree['data'][self.state]
        res_id = (res_seq, i_code)
        if chain_id not in a_state:
            a_state[chain_id] = (set(), OrderedDict())
        if res_id not in a_state[chain_id][1]:
            a_state[chain_id][1][res_id] = (set(), OrderedDict())
        if at_type == 'ATOM':
            if res_name in standard_amino_acids.values():
                poly = 'P'
            else:
                poly = 'N'
        else:
            poly = 'H'
        a_state[chain_id][0].add((chain_id, at_type, poly))
        a_state[chain_id][1][res_id][0].add(
            (at_type, res_seq, res_name, i_code))
        if at_ser not in a_state[chain_id][1][res_id][1]:
            a_state[chain_id][1][res_id][1][at_ser] = [atom_data]
        else:
            a_state[chain_id][1][res_id][1][at_ser].append(atom_data)
        return