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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_charge_and_multiplicity(self):
 """ Parses charge and multiplicity. """

        temp_charge = read_pattern(
            self.text, {
                "key": r"\$molecule\s+([\-\d]+)\s+\d"
            },
            terminate_on_match=True).get('key')
        if temp_charge != None:
            self.data["charge"] = int(temp_charge[0][0])
        else:
            temp_charge = read_pattern(
                self.text, {
                    "key": r"Sum of atomic charges \=\s+([\d\-\.\+]+)"
                },
                terminate_on_match=True).get('key')
            if temp_charge == None:
                self.data["charge"] = None
            else:
                self.data["charge"] = int(float(temp_charge[0][0]))

        temp_multiplicity = read_pattern(
            self.text, {
                "key": r"\$molecule\s+[\-\d]+\s+(\d)"
            },
            terminate_on_match=True).get('key')
        if temp_multiplicity != None:
            self.data["multiplicity"] = int(temp_multiplicity[0][0])
        else:
            temp_multiplicity = read_pattern(
                self.text, {
                    "key": r"Sum of spin\s+charges \=\s+([\d\-\.\+]+)"
                },
                terminate_on_match=True).get('key')
            if temp_multiplicity == None:
                self.data["multiplicity"] = 1
            else:
                self.data["multiplicity"] = int(
                    float(temp_multiplicity[0][0])) + 1